Question

By what percent is 72 more than 45?

Answer 1

72 - 45 = 27

percent = 27 / 45 × 100

= 3/ 5 ×100

=3×20

=60

Answer 2

$45 +x \div 100 \times 45 = 72 \\ 45x \div 100 = 72 - 45 \\ 45x = 27 \times 100 \\ x = 2700 \div 45 \\ x = 60$
Answer is 60