Finding The Whole

Question

The difference between 7/8 of a number and 3/4 of the number is 10. What is the number?

Answer 1

(7/8)x - (3/4)x = 10

(7/8)x - (6/8)x = 10

(1/8)x = 10

x = 8(10) = 80

the number is 80

7/8)(80) + 3/4)(80) = 70 -60 = 10