q: Find the simple interest on Rs.350 for 10 months at 5 paisa per month?
Options:
(A) 277
(B) 175
(C) 288
(D) 266
(E) 121
a: OK... I = (350*10*5)/100 = 175
The answer is (B).

q: A motorcyclist goes from Bombay to Pune, a distance of 224 kms at an average of 32 kmph speed. Another man starts from Bombay by car 2 hours after the first, and reaches Pune hour earlier. What is the ratio of the speed of the motorcycle and the car?
Options:
(A) 1:2
(B) 1:5
(C) 4:7
(D) 1:1
(E) 1:8
a: OK... T = 224/32 = 7 h
T = 7 - 3 = 4
Time Ratio = 7:4
Speed Ratio = 4:7
The answer is (C).

q: Dacid obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
Options:
(A) 75
(B) 45
(C) 23
(D) 28
(E) 96
a:
OK... Average = (76 + 65 + 82 + 67 + 85)/5 = 375/5 = 75.
The answer is (A).