Question

Translate into an algebraic expressions: b is decreased by 40% and decreased again by 40% . What is the result ?

Answer 1

The answer is 0.36b

Explanation:

b-0.4xb=b-0.4b=0.6b

0.6b-0.4(0.6b)=0.6b-0.24=0.36b

Answer 2

b-4/5b

Explanation:

b is decreased by 80%

dat is 80/100×b

= b-80/100b

b-4/5b