Question

three-fourths of a number is five-eighths. find the number

Answer 1

What the statement above is saying is the following: 
(3/4)n = 5/8

Solve for n. 

3n/4 = 5/8

Is another way to write the above statement.

Multiply 4 on both sides.

3n = (5*4)/8
3n = 20/8

Divide 3 on both sides to solve for n. 

n = (20/8)/3
n = (20/8*3)
n = 20/24

Simplify!

n = 5/6