Question

a has 4 times as much as b and on the average a and b have rs. 80 how much does a have?

Answer 1

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