A. Rs.460
B. Rs.5640
C. Rs.5460
D. Rs.5604
A. 15 5/15%
B. 18 2/11%
C. 16 2/3%
D. 30%
Explanation:
13 CP = 11 SP
11 — 2 CP
100 — ? =>18 2/11%
A. 20
B. 25
C. 125
D. 60
M1*D1*W2 = M2*D2*W1
Where, M – number of people working
D – time of work
W – number of tasks or work
6*4*W2 = 10*6*50
W2 = 125 tasks
A. 10
B. 46
C. 70
D. 90
Explanation:
Let the numbers be x and (100 – x).
Then, x(100 – x) = 5 * 495
x2 – 100x + 2475 = 0
(x – 55)(x – 45) = 0
x = 55 or 45
The numbers are 45 and 55.
Required difference = 55 – 45 = 10.
A. Rs. 31
B. Rs. 32.10
C. Rs. 40.40
D. Rs. 64.10
Explanation:
S.I. = (1000 * 10 * 4)/100 = Rs. 400
C.I. = [1000 * (1 + 10/100)4 – 1000] = Rs. 464.10 Difference = (464.10 – 400) = Rs. 64.10
A. 93
B. 39
C. 75
D. 48
E. Either (a) or (b)
Explanation:
Let the two-digit number be 10a + b
a + b = 12 — (1)
If a>b, a – b = 6
If b>a, b – a = 6
If a – b = 6, adding it to equation (1), we get
2a = 18 => a =9
so b = 12 – a = 3
Number would be 93.
if b – a = 6, adding it to the equation (1), we get
2b = 18 => b = 9
a = 12 – b = 3.
Number would be 39.
There fore, Number would be 39 or 93.
A. 3 1/4 min
B. 5 1/4 min
C. 8 1/4 min
D. 9 1/4 min
Explanation:
3/12 + (3 + x)/15 = 1
x = 8 1/4