A. 1
B. 2
C. 3
D. 5
Explanation:
8/15 * 3/4 * 3 ?/4 = 1.5
=> 3 ?/4 = 3/2 * 5/2 = 15/4 = 3 3/4
=> ? = 3.
A. 17 hours
B. 12 hours
C. 16 hours
D. 24 hours
Explanation:
The part of the tank filled by three pipes in one hour = 1/8
=> The part of the tank filled by two pipes in 1 hour = 2/3 * 1/8 = 1/12.
The tank can be filled in 12 hours.
A. 9
B. 16
C. 8
D. 12
Explanation:
Applying BODMAS rule
= 7 + 1/2 of [8 – 4 / 2 * 3 – 2 + (4 + 2) – 2 * 2]
= 7 + 1/2 of [8 – 2 * 3 – 2 + 6 – 4]
= 7 + 1/2 of (2) = 8
A. 6:8
B. 3:7
C. 5:4
D. 4:3
If the ratio of the speeds of two objects is a:b, then the time taken by them to cover the same distance is
b:a Hence, the answer is 4:3
A. 1:3
B. 2:3
C. 3:4
D. 4:5
A. Rs.482
B. Rs.424
C. Rs.842
D. Rs.512
Explanation:
20000(11/10)4 – 20000(6/5)2 = 482
A. 4920 cm2
B. 4727 cm2
C. 9856 cm2
D. 19712 cm2