The cost price of a radio is Rs.1500 and it was sold for Rs.1230, find the loss %?
The cost price of a radio is Rs.1500 and it was sold for Rs.1230, find the loss %?
A. 18%
B. 9%
C. 15%
D. 6%
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A and B put in Rs.300 and Rs.400 respectively into a business. A reinvests into the business his share of the first year’s profit of Rs.210 where as B does not. In what ratio should they divide the second year’s profit?
A and B put in Rs.300 and Rs.400 respectively into a business. A reinvests into the business his of the first year’s profit of Rs.210 where as B does not. In what ratio should they divide the second year’s profit?A. 39:40
B. 40:39
C. 3:4
D. 4:3
Explanation:
3: 4
A = 3/7*210 = 90
390: 400
39:40A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?
A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?A. 4500 M3
B. 27000 M3
C. 3000 M3
D. 2700 M3
(3000 * 2 * 5)/60 = 4500 M3Rs.1200 divided among P, Q and R. P gets half of the total amount received by Q and R. Q gets one-third of the total amount received by P and R. Find the amount received by R?
Rs.1200 divided among P, Q and R. P gets half of the total amount received by Q and R. Q gets one-third of the total amount received by P and R. Find the amount received by R?A. Rs.400
B. Rs.500
C. Rs.300
D. Rs.600
E. None of these
Explanation:
Let the amounts to be received by P, Q and R be p, q and r.
p + q + r = 1200
p = 1/2 (q + r) => 2p = q + r
Adding ‘p’ both sides, 3p = p + q + r = 1200
=> p = Rs.400
q = 1/3 (p + r) => 3q = p + r
Adding ‘q’ both sides, 4q = p + q + r = 1200
=> q = Rs.300
r = 1200 – (p + q) => r = Rs.500.10 books are placed at random in a shelf. The probability that a pair of books will always be together is_________?
10 books are placed at random in a shelf. The probability that a pair of books will always be together is_________?A. 1/10
B. 9/10
C. 1/5
D. 3/10
Explanation:
10 books can be rearranged in 10! ways consider the two books taken as a pair then number of favourable ways of getting these two books together is 9! 2!
Required probability = 1/5In a college election, a candidate secured 62 % of the votes and is elected by a majority of 144 votes. The total number of votes polled is:________?
In a college election, a candidate secured 62 % of the votes and is elected by a majority of 144 votes. The total number of votes polled is:________?A. 600
B. 800
C. 925
D. 1200
Explanation:
(62 % of x – 38 % of x) = 144
or 24 % of x = 144
x = 14400/24 = 600Which of the following has most number of divisors?
Which of the following has most number of divisors?A. 99
B. 101
C. 176
D. 182
Explanation:
99 = 1 * 3 * 3 * 11; 101 = 1 * 101;
176 = 1 * 2 * 2 * 2 * 2 * 11; 182 = 1 * 2 * 7 * 13
So, divisors of 99 are 1, 3, 9, 11, 33 and 99;
divisors of 101 are 1 and 101;
divisors of 176 are 1, 2, 4, 8, 16, 22, 44, 88 and 176;
divisors of 182 are 1, 2, 7, 13, 14, 26, 91 and 182.
Hence, 176 has the most number of divisors.