q: A team of eight entered for a shooting competition. The best marks man scored 82 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score?
Options:
(A) 662
(B) 672
(C) 652
(D) 642
(E) 721
a: OK... 8 * 84 = 672 10 = 662
The answer is (A).

q: Divide Rs.32000 in the ratio 1:7?
Options:
(A) 12000, 20000
(B) 12000, 200098
(C) 4000, 28000
(D) 12000, 20006
(E) 12000, 20001
a: OK... 1/8 * 32000 = 4000
7/8 * 32000 = 28000
The answer is (C).

q: The average age of a class of 14 students is 10 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher
Options:
(A) 30 Years
(B) 31 Years
(C) 32 Years
(D) 34 Years
(E) 25 Years
a:
OK... Total age of students is 14X10 = 140 Years
Total age inclusive of teacher = 15X (10+1) = 165
So, Teacher's age is 165-140 = 25 Yrs
There is a shortcut for these type of problems
Teacher's age is 10+(15X1) = 25 Years
The answer is (E).