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If the arithmetic mean of seventy-five numbers us calculated, it is 35. If each number is increased by 5, then mean of new numbers is:
Answer & Solution
Correct Answer:
Option
B
Arithmetic mean of 75 members = 35
Sum of 75 numbers
= (75 × 35) = 2625
Total increase
= (75 × 5) = 375
Increased sum
= (2625 + 375) = 3000
Increased average
= $$\frac{3000}{75}$$
= 40
Sum of 75 numbers
= (75 × 35) = 2625
Total increase
= (75 × 5) = 375
Increased sum
= (2625 + 375) = 3000
Increased average
= $$\frac{3000}{75}$$
= 40
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