Question

If 45% of a number exceeds 28% of it by 68, then what is 40% of that number? Solution

Answer 1

Answer:

40% of the number is 160

Step-by-step explanation:

Let the number be 'x'

By given condition,

(45/100)x = (28/100)x+68

(9/20)x = (7/25)x+68

9x/20 = (7x+1700)/25

Multiplying both sides by 5

9x/4 = (7x+1700)/5

45x = 4(7x+1700)

45x = 28x+6800

45x-28x = 6800

17x = 6800

x = 6800/17

x = 400

The number is 400.

40% of 400 = 40/100 × 400

= 160

40% of the number is 160