A basket contain green, black and blue balls in the ratio 5 : 2 : 1. If there are 10 blue balls. Find the corresponding new ratio when 10 green and 10 black...

Assessment: JAMB UTME - Mathematics - 1988 Subject: General Mathematics

Question 1 Report

A basket contain green, black and blue balls in the ratio 5 : 2 : 1. If there are 10 blue balls. Find the corresponding new ratio when 10 green and 10 black balls are removed from the basket
Answer Details
Let x represent total number of balls in the basket.
If there are 10 blue balls,  1 8  of x = 10
x = 10 x 8 = 80 balls
Green balls will be  5 8  x 80 = 50 and black balls =  2 8  x 80 = 20
Ratio = Green : black : blue
50 : 20 : 10
-10 : 10 : -
------------------
New Ratio 40 : 10 : 10
4 : 1 : 1

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