Question

A number is increased by 20% and, then it is decreased
by 10%, the net change in the number​

Answer 1

Answer:

let number be x

after increasing by 20% it becomes=1.2x

after decreasing by 10% it becomes =0.9×1.2x=1.08x

so the ultimately number increased by 8%

Answer 2

Answer:

8%

Step-by-step explanation:

Let the original number = 100

Increased by 20%

∴ New number = 100 + 20 = 120

Decreased by 10% = (120 × 10)/100 = 12

∴ New number = 120 – 12 = 108

Overall change = 108 – 100 = 8

Reqd. percentage = 8/100 × 100 = 8% (increased)