Question

two numbers are in the ratio 4:5 the difference of their squares is 81 find numbers

Answer 1

no are 12 and 15 hope it will help you

Answer 2

x/y = 4/5 
y^2 - x^2 = 81 

x = 4y/5 
y^2 - (4y/5)^2 = 81 
y^2 - 16y^2/25 = 81 
9y^2/25 = 81 
y = sqrt (81*25/9) 
y = 15 

x = 4(15)/5 = 12

hope this method helps u