Question

find the ratio of (4x + 5y) and (5x - 2y), if x:y is 3:4.

Answer 1

$4 \times 3 + 5 \times 4is \: divided \: by \: 5 \times 4 - 2 \times 4 \\ then \: we \: get \: 35 \div 7 = 5 \div 1$