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
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. 24 days
B. 14 days
C. 15 days
D. 20 days
Time and Men are inversely proportional. Time taken by 28 men to finish the work = 15 days Time taken by a man to finish the work
= 15*28 days Time taken by 21 men = (15*28)/21 = 20 days
A. $503
B. $504
C. $505
D. $506
Cash price = $21 000
Deposit = 10% × $21 000
= $2100
Loan amount = $21 000 − $2100
= $18 900
I=p*r*t/100
I=11340
Total amount = 18 900 + 11 340
= $30 240
regular payment = total amount /number of payments
A. 1/21
B. 4/7
C. 2/7
D. 5/7
A. 4%
B. 5%
C. 6%
D. 8%
Explanation:
SI = 20 + 20
CI = 20 + 21
20 —- 1
100 —- ? => 5%
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