A. 180
B. 360
C. 540
D. 1260
Explanation:
4 * 27 * 3125 = 22 * 33 * 55;
8 * 9 * 25 * 7 = 23 * 32 * 52 * 7;
16 * 81 * 5 * 11 * 49 = 24 * 34 * 5 * 72 * 11
H.C.F = 22 * 32 * 5 = 180.
A. 25 hrs
B. 28 hrs
C. 20 hrs
D. 35 hrs
Explanation:
1/x + 1/(x + 10) = 1/12
x = 20
A. 6:25
B. 3:5
C. 9:25
D. 16:25
a13 : a23 = 27 : 125
a1 : a2 = 3 : 5
6 a12 : 6 a22
a12 : a22 = 9 : 25
A. 1160
B. 1100
C. 1080
D. 1210
E. None of these
Explanation:
Number of sweets each child got = 15% of 80 = 15/100 * 80 = 12.
Number of sweets 80 children got = 80 * 12 = 960.
Number of sweets each youngster got = 25% of 80 = 25/100 * 80 = 20.
Number of sweets 10 youngsters got = 10 * 20 = 200.
Total number of sweets = 960 + 200 = 1160.
A. 100 cu.m
B. 1000 cu.m
C. 10000 cu.m
D. 2000 cu.m
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