Question

The price of a packet of salt goes up by 9 cents.The old price is 4/5 of the new price. Find the old and new prices. Let the old price be n and the new price be n+9

Answer 1

Answer:

let old price = X

new price= x± 9

given = 4|5 of X+9

so 4/5 × X+9 = 4x+36/5

X= 36

X+9= 45