a has 4 times as much as b and on the average a and b have rs. 80 how much does a have?
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Answer:
a= 128 and b= 32
Step-by-step explanation:
a= 4*b
let 'b' be x
therefore, a= 4x
Average of a & b = 80
i.e. (a + b) / 2 = 80
since, a = 4x:
(4x + x) / 2 = 80
5x/2 = 80
5x = 80 * 2
x = 160 / 5
x = 32
b= 32, therfore, a = 4 * 32 = 128
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