A. 90730
B. 90725
C. 90715
D. 90720
Explanation:
LCM = 10080
10080) 99999 (8
90720
———
9279
99999 – 9279 = 90720
A. 4km
B. 6 km
C. 8 km
D. 12 km
Explanation:
Speed downstream = (9+3) km/hr = 12km/hr
Speed upstream = (9-3) km/hr = 6 km/hr
Distance AB = x km
x/6 + x/12 = 3
=> 2x + x = 36
=> x= 12
A. Rs.8000, Rs.17000
B. Rs.9000, Rs.16000
C. Rs.18000, Rs.7000
D. Rs.10000, Rs.15000
Explanation:
The ratio of their profits A:B = 8:12 = 2:3
of A in the total profit = 2/5 * 25000 = Rs.10000 of A in the total profit = 3/5 * 25000 = Rs.15000
A. No profit No loss
B. 4% profit
C. 2% loss
D. 2% profit
E. None of these
Explanation:
Let CP of an article = RS. 100
MP= Rs. 120
Discount = 20%
SP = M[(100 – d%)/100] = 120(80/100) = Rs. 96
Clearly, the trader gets 4% loss.
A. 1.8 km/hr
B. 3 km/hr
C. 3.6 km/hr
D. 4 km/hr
Let x be the speed of the river.
Ds = (6 + x) km/hr; Us = (6 – x) km/hr
If t hours is the time to row downstream then 4t hours is the time to row upstream.
(6 + x)*t = (6 – x)*4t
6 + x = 24 – 4x
x = 3.6 km/hr
A. 60
B. 360
C. 120
D. 240
Explanation:
The given digits are 1, 2, 3, 5, 7, 9
A number is even when its units digit is even. Of the given digits, two is the only even digit.
Units place is filled with only ‘2’ and the remaining three places can be filled in ⁵P₃ ways.
Number of even numbers = ⁵P₃ = 60.
A. 10%
B. 11%
C. 21%
D. 100%
Explanation:
Suppose I Purchased 110 books
C.P = Rs. (10/11 × 110) = Rs. 100
S.P = Rs. (11/10 × 110) = Rs. 121
Gain % = 21%