The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?

A 22 years
B 30 years
C 40 years
D 32 years

Correct Answer: 32 years

Total age of 10 students = 20×10 = 200 Total age of 12students = (20 + 2)12 = 264∴ age of 2 new students = 264 - 200 = 64average = 64/2 = 32
Bissoy MCQ
#পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা #গণিত #শতকরা (Percentage) #পল্লী কর্ম সহায়ক ফাউন্ডেশন সহকারী ব্যবস্থাপক ০২. ০৮.২০১৯

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