Question

a:b=5:7 if (3a+5b):(5a+2b)​

Answer 1

Answer:

put a=5 and b= 7

3×5+5×7 : 5×5+2×7

50 : 39

Answer 2

let a=5x and b=7x

then atq

(3*5x+5*7x) (5*5x+2*7x)

(15x+35x) (25x+14x)

50