A. 5 cm
B. 19 cm
C. 13 cm
D. 144 cm
A. 6
B. 5
C. 10
D. 7
Explanation:
The number of shirts = X
Rebate = (25/100 × 32 X) = 8X
8X = 40 or X = 5
A. Increased by 4%
B. decreased by 4%
C. Decreased by 1%
D. Remains unchanged
Explanation:
Let length = x metres and breadth = y metres, then area =(xy)
New length =(120/100x)m = 6x/5 m
New breadth =(80/100 y)m
New area =(6x/5 x 4y/5)m2 = (24/25 xy)m2
Decreased in area =(xy – 24/25 xy)m2= xy/25 m2
Decreased % =(xy/25 x 1/xy x 100)% = 4%
A. 3
B. 13
C. 23
D. 33
Explanation:
L.C.M of 5, 6, 4 and 3 = 60.
On dividing 2496 by 60, the remainder is 37. Number to be added = 60 – 37 = 23.
A. 1/216
B. 1/36
C. 5/9
D. 5/12
Explanation:
It all 3 numbers have to be same basically we want triplets. 111, 222, 333, 444, 555 and 666. Those are six in number. Further the three dice can fall in 6 * 6 * 6 = 216 ways.
Hence the probability is 6/216 = 1/36
A. 4 days
B. 6 days
C. 8 days
D. 12 days
(A + B + C)’s 1 day’s work = 1/6; (A + B)’s 1 day’s work = 1/8 (B + C)’s 1 day’s work = 1/12 (A + C)’s 1 day’s work = ( 2 X 1/6 ) – ( 1/8 + 1/12 ) = ( 1/3 – 5/24 ) = 3/24 = 1/8 So, A and C together will do the woirk in 8 days.
A. 2 1/2 %
B. 4%
C. 5%
D. 6 2/3 %
Explanation:
S.I. on Rs. 800 for 1 year = (840 – 800) = Rs. 40 Rate = (100 * 40)/(800 * 1) = 5%