Question

If a mathematician increases a number by $40$% and decreases it by $25$%, the new number is of what percentage of the original number?

• A. $100$
• B. $105$
• C. $85$
• D. $140$

Answer 1

Answer: (B)

$105$

A mathematician increase a number by $40\%$

Then new number $=100+40=140$

After decreases it by $25\%$

Then other new number $=$ $\frac{140\times 75}{100}=105$ %