A. 3/5
B. 5/16
C. 2/9
D. None of these
A. Rs.3630
B. Rs.2840
C. Rs.3200
D. Rs.5600
Explanation:
6300:4200:10500
3:2:5
3/10 * 12100 = 3630
A. 25%
B. 33 1/3 %
C. 50%
D. 66 2/3 %
Explanation:
Let C.P. of each pen be Re. 1.
Then, C.P. of 8 pens = Rs. 8; S.P. of 8 pens = Rs. 12.
Gain % = 4/8 * 100 = 50%
A. 4 months
B. 5 months
C. 6 months
D. 8 months
A. 40 %
B. 32 %
C. 22 %
D. 8 %
Explanation:
Let A = set of students who play football and
B = set of students play cricket.
Then n(A) = 40, n (B) = 50 and
n(A U B) = (100 – 18) = 82
n(A U B) = n(A) + n(B) – n(A ∩ B)
n(A∩B) = n(A) + n(B) – n(AUB) = (40 + 50 -82) = 8
Percentage of the students who play both = 8%
A. 90
B. 72
C. 36
D. 108
A. 4 9/11
B. 37
C. 47
D. 74
Explanation:
2/3 * 5 1/2 * 2 * 7 5/6 * 9/11
2/3 * 11/2 * 2 * 47/6 * 9/11 = 47