A. 8: 1
B. 2√2 : 1
C. 2 : 1
D. None of these
Explanation:
Volumes be 8×3 and x3
2x and x respectively
Therefore, Ratio of their edges = 2 : 1
A. 5/11
B. 6/11
C. 7/11
D. 8/11
Explanation:
Part filled by (A + B + C) in 3 minutes = 3(1/30 + 1/20 + 1/10) = 11/20
Part filled by C in 3 minutes = 3/10
Required ratio = 3/10 * 20/11 = 6/11
A. 7 years
B. 11 years
C. 18 years
D. 27 years
9 * 2 = 18 years
A. 180
B. 170
C. 190
D. 175
Explanation:
Let the five numbers be P, Q, R, S and T.
=> P + Q + R + S + T = 655.
(P + Q)/2 = 85 and R = 125
P + Q = 170 and R = 125
P + Q + R = 295
S + T = 655 – (P + Q + R) = 360
Average of the last two numbers = (S + T)/2 = 180
A. 1109300
B. 1109400
C. 1108400
D. 1108300
Explanation:
108 * 107 * 96 ≡ 1109400
A. 24 cm3
B. 48 cm3
C. 64 cm3
D. 120 cm3
Let the dimensions of the cuboid be x, 2x and 3x.
Then, 2 (x X 2x + 2x X 3x + x X 3x) = 88
⇔ 2X2 6X2 + 3X2 = 44 ⇔ 11X2 = 44 ⇔ X2 = 4 ⇔ x = 2.
Volume of the Cuboid = (2 X 4 X 6) cm3 = 48 cm3.
A. 4 : 3
B. 3 : 2
C. 6 : 5
D. 7 : 6
E. None of these
Explanation:
Let x be the investment of Rayan in 6% and y be in 7%
x(6)(n)/100 = y(7)(n)/100
=> x/y = 7/6
x : y = 7 : 6