Question

Two numbers are in the ratio 7:9.If it's sum is 32. Difference of their square

Answer 1

Answer:

128

Step-by-step explanation:

Two numbers are in the ratio 7:9

Let 1st number be 7x

and 2nd number be 9x

Sum of these two numbers = 32

or, 7x + 9x = 32

or, 16x = 32

or, x = 32/16

or, x = 2

therefore, 1st number = 7x = 7×2 = 14

2nd number = 9x = 9×2 = 18

Now, difference of their square = 18² - 14²

= 324 - 196

= 128