Question

five bananas and four apples cost as much as three banas and seven apples. the ratio of the cost one banana to that of one apple is :

Answer 1

let the 1 banana cost be x
5 banana 5x
let one apple cost be y
4 apple 4y

then, for 3banana =3x
for 7 banana = 7y

I think this much will help u

Answer 2

Answer:

2B+3A=1B+4A

2B-1B=4A-3A

1B=1A

B/A=1/1