Question

The average of 75 numbers is calculated as 35. If each number is increased by 5, then the new average is

• A. 30
• B. 40
• C. 70
• D. 80

Answer 1

Answer: (B)

40

Sum of 75 numbers $=75\times 35=2625$
Total increase $=75\times 5=375$
$\therefore$ New sum $=2625+375=3000$
$\Rightarrow$ New average $=\frac{3000}{75}=40$