A. 90
B. 72
C. 36
D. 108
A. 4, 8, 12
B. 5, 10, 15
C. 10, 20, 30
D. 12, 24, 36
Explanation:
Let the required numbers be x, 2x and 3x. Then, their H.C.F = x. So, x = 12.
The numbers are 12, 24, 36.
A. 8%
B. 9%
C. 10%
D. 11%
A. 37
B. 38
C. 39
D. 40
Explanation:
Perimeter = 2×(36+21) m = 114 m
Number of flag staffs = (114/3) = 38
A. 9(3/5) days
B. 9(1/5) days
C. 9(2/5) days
D. 10 days
Amount of work P can do in 1 day = 1/16
Amount of work Q can do in 1 day = 1/12
Amount of work P, Q and R can together do in 1 day = 1/4
Amount of work R can do in 1 day = 1/4 – (1/16 + 1/12) = 3/16 – 1/12 = 5/48
=> Hence R can do the job on 48/5 days = 9 (3/5) days
A. Rs. 7500
B. Rs. 9000
C. Rs. 9500
D. Rs. 10,000
E. None of these
Explanation:
A:B:C = (20000 * 24) : (15000 * 24) : (20000 * 18) = 4:3:3
B’s = 25000 * 3/10 = Rs. 7500.
A. 17.5cm
B. 21cm
C. 28cm
D. None of these