Since five are already there, you must add 10 red counters. Two counters ae taken at random from the bag. Now after the addition of x red counters, # red: # yellow = 1:2. Not my homework exactly but it's homework like so.. Not sure that it is any quicker, but having got to (w+7)(w+6)=80w/3 it is clear that 3|w, and then immediately that 9|w, so can rewrite as (9w'+7)(3w'+2)=80w'. To get a ratio of 1 red counter for every 2 yellow counters, you have to have a total of 15 red counters in the bag. Probabilities: "A bag contains counters that are red, blue, green and yellow. Two counters are removed at random. Do people actually attempt to solve this kind of puzzle manually. Get a free answer to a quick problem. Kenneth S. changed the number of yellow counters to 25, but 30 is given as the number of yellows. There is one red counter for every 6 yellow counters. Posted by 2 years ago. Start here or give us a call: (312) 646-6365. What does one of these counters look like? The ratio of the number of red counters to the number of yellow counters is 1:6. 30 = 6 = 5, there fore there were 5 red counters in the bag. The ratio of the number of red counters to the number of yellow counters is I :6 (a) Work out the number of red counters in the bag. There are some red counters and some blue counters in a bag. Close. No packages or subscriptions, pay only for the time you need. (b) Complete the spinner by writing on it the colours that are missing. Calculate the probability that only ONE of the two counters are white. 1. Most questions answered within 4 hours. How can I calculate the value of a number raised to the power of a fraction, e.g., 9^(3/2)? To get a ratio of 1 red counter for every 2 yellow counters, you have to have a total of 15 red counters in the bag. The ratio of red counters to blue counters is 3:1. One to one online tution can be a great way to brush up on your Maths knowledge. 10 There are some red counters and some yellow counters in a bag. Therefore the # of red counters is 5 and there are 25 yellows. A)Express, in terms of n, the probability that a counter of each colour is taken. For Free, Elementary Math Topic: Fractions, Percents, Rates, Ratios and Decimal Equivalences. Kenneth S. Homework Equations P(W&R) = P(W) * P(R) The Attempt at a Solution 5 (2) Riza puts some more red counters Into the bag. A simple math equation solving for unknown, Finding unknown given vector a,b and parallel, Simple Algebra problem - Solving for 2 of the same unknown, How to solve a system of 3 equations for 3 unknowns, Solving a Linear equation with 3 unknown variables. There are 400 counters in a bag. Riza puts some more red counters into the bag. One counter is blue and the rest are red. Work out the solutions to the following quadratic equation: x² + 7x + 10 = 0 by factorising. Since five are already there, you must add 10 red counters. Solving for unknown in arccos equation help? At the start there are 7 red and the rest white. answered • 01/22/17, Professor of Accounting, retired. Now, Jim has four green counters in the bag. answered • 01/22/17, Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018, Serge M. A Bag contains n counters. Solve, using SohCahToa, right angle triangle ABC for the hypotenuse, where adjecent=10cm & theta=40 degrees. Factorise and find the solutions of the equation 6x^2 + 4x -10 = 0. The probability that the first is white and the second red is 21/80. I am unfamiliar with the word COUNTER in the sense of an object that is counted and capable of being place into a bag. How many white counters were in the bag at the start? Jim has five reds, Six blues, that's Eleven, so if we want the probability to be one to three with the red counters, we will have to add three more green counters to the one we had, making them 15. There are some red counters and some yellow counters in a bag. If there are 30 yellow "counters" and # red: # yellow = 1:6. that means: # red /30 = 1/6. Alfie takes two counters at random without putting any back. If the probability of picking a red at … Choose an expert and meet online. Obviously w'=0 is too small and 1 is too much, so.... Genomic data 'catches corals in the act' of speciation and adaptation, Bats can predict the future, researchers discover, Neanderthal children grew and were weaned similarly to modern humans, Solving trigonometric equation of a sum of unknowns. The probability that the spinner lands on red will be The probability that the spinner lands on blue will be less than the probability that the spinner lands on white. Archived. A bag contains 10 counters 6 of them are white, a counter is taken at random and is NOT replaced, a second counter is taken out of the bag at random. How many red counters does Riza put into the bag? There are 9 red, (3x) blue, (x-5) green and (2x) yellow. Zed 20 — / ) (Total for question 1 is 5 marks) JavaScript is disabled. A link to the app was sent to your phone. Probability of picking green = (16 - 5)/100 = 11/100. The probability that both the counters taken are blue is 20 Work how many counters were in the bag before any counters were removed. Ph.D., CPA. (2) (Total 4 marks) _____ 6. There are still 30 yellow counters in the bag plus five red counters. For a better experience, please enable JavaScript in your browser before proceeding. Have a Free Meeting with one of our hand picked tutors from the UK’s top universities. The ratio of the number of red counters to the number of yellow counters is now 1:2. There are 30 yellow counters in the bag. Kenneth S. changed the number of yellow counters to 25, but 30 is given as the number of yellows. There are some red and white counters in a bag. If there is a total of 100 counters, 9 + (3x) + (x-5) + (2x) = 100. 36% of the counters are yellow. © 2005 - 2020 Wyzant, Inc. - All Rights Reserved, a Question

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