Question

a number is fourth fifths of the other if their sum is 180 find the numbers

Answer 1

Define x:

Let x be one number

The other number is 4/5 of the number

⇒ Number = 0.8x

Solve x:

The sum of the number is 180

x + 0.8x = 180

1.8x = 180

x = 100

Find the number:

one number = x = 100

The other number = 0.8x = 0.8 (100) = 80

Answer: The numbers are 80 and 100.

Answer 2

hope it will help you