q: If 4 girls can color 48 m long cloth in 2 days, then 6 girls can color 36 m long cloth in
Options:
(A) 1 1/5 days
(B) 1/5 day
(C) 1 day
(D) 2 days
(E) 3 days
a: OK... The length of cloth painted by one girl in one day = 48 / 4 × 2 = 6 m
No. of days required to paint 36 m cloth by 6 girls = 36/ 6 × 6 = 1 day.
The answer is (C).

q: John makes $40 a week from his job. He earns a raise and now makes $80 a week. What is the % increase?
Options:
(A) 16%
(B) 16.66%
(C) 17.9%
(D) 18.12%
(E) 100%
a: OK... Increase = (40/40)*100 = (1)*100 = 100%.
The answer is (E).

q: A boy runs 200 metres in 30 seconds. What is his speed ?
Options:
(A) 20 km/hr
(B) 24 km/hr
(C) 30 km/hr
(D) 32 km/hr
(E) 34 km/hr
a:
OK... 200/30 * 18/5 = 24 km/hr
The answer is (B).