CAT Practice Question and Answer
8Q: Althaf borrows Rs. 1500 from two moneylenders. He pays interest at the rate of 12% per annum for one loan and at the rate of 14% per annum for the other. The total interest he pays for the entire year is Rs. 186. How much does he borrow at the rate of 12% ? 2738 05b5cc6fee4d2b4197774f166
5b5cc6fee4d2b4197774f166- 1Rs. 300false
- 2Rs. 400false
- 3Rs. 1200true
- 4Rs. 1100false
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Answer : 3. "Rs. 1200"
Explanation :
Answer: C) Rs. 1200 Explanation: Let Althaf lent Rs. A at 14% per year.Hence, Money lent at 12% = (1500-A);Given, total interest = Rs. 186.{(A x 14x 1)/100} + {[(1500-A) x 12 x 1/100]} = 186;14A/100 + (18000 -12A)/100 = 186;14A + 18000 - 12A = 186x100;2A = 18600-18000;A = 600/2 = Rs. 300.Hence, money lent at 12% = 1500-300 = Rs. 1200.
Q: P alone can complete a piece of work in 6 days. Work done by Q alone in one day is equal to one-third of the work done by P alone in one day. In how many days can the work be completed if P and Q work together ? 2736 05b5cc6d8e4d2b4197774e737
5b5cc6d8e4d2b4197774e737- 15 (2/3)false
- 26 (3/4 )false
- 34 (1/2)true
- 43false
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Answer : 3. "4 (1/2)"
Explanation :
Answer: C) 4 (1/2) Explanation: Work done by P alone in one day = 1/6th of the total work done by Q alone in one day = 1/3(of that done by P in one day) = 1/3(1/6 of the total) = 1/18 of the total. Work done by P and Q, working together in one day = 1/6 + 1/18 = 4/18 = 2/9 They would take 9/2 days = 4 (1/2) days to complete the work working together.
Q: Statements : In a recent survey report, it has been stated that those who undertake physical exercise for at least half an hour a day are less prone to have any heart ailments. Conclusions : a) Moderate level of physical exercise is necessary for leading a healthy life.b) All people who do desk-bound jobs definitely suffer from heart ailments. 2734 05b5cc745e4d2b4197774fa31
5b5cc745e4d2b4197774fa31- 1Only a followstrue
- 2Both a & b followsfalse
- 3Only b followsfalse
- 4Neither a nor b followsfalse
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Answer : 1. "Only a follows"
Explanation :
Answer: A) Only a follows Explanation: The statement mentions that chances of heart ailments are greatly reduced by a regular half-hour exercise. So, a follows. However, it talks of only reducing the probability which does not mean that persons involved in sedentary jobs shall definitely suffer from heart ailments. So, b does not follow. Hence, concusion a only follows the given statement.
Q: In a hostel, there was food for 1000 students for one month. After 10 days, 1000 more students joined the hostel. How long would the students be able to carry on with the remaining food? 2734 05b5cc774e4d2b41977750025
5b5cc774e4d2b41977750025- 110 daystrue
- 215 daysfalse
- 320 daysfalse
- 45 daysfalse
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Answer : 1. "10 days"
Explanation :
Answer: A) 10 days Explanation: After 10 days, the remaining food would be sufficient for the 1000 students for 20 more days -->If 1000 more students are added, it shall be sufficient for only 10 days (as the no. of students is doubled, the days are halved).
Q: Who invented the high level language C? 2733 05b5cc622e4d2b4197774b811
5b5cc622e4d2b4197774b811- 1Dennis M. Ritchietrue
- 2Donald Kunthfalse
- 3Niklaus Writhfalse
- 4Seymour Papertfalse
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Answer : 1. "Dennis M. Ritchie"
Explanation :
Answer: A) Dennis M. Ritchie Explanation: C, an early systems programming language, was developed by Dennis Ritchie and Ken Thompson at Bell Labs between 1969 and 1973.
Q: Chinese writers mention India by the name of 2729 05b5cc699e4d2b4197774c71a
5b5cc699e4d2b4197774c71a- 1Yin-tutrue
- 2Si-Yu-Kifalse
- 3Sikia-Ponofalse
- 4Fo-Kwo-Kifalse
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Answer : 1. "Yin-tu"
Explanation :
Answer: A) Yin-tu Explanation: The Chinese writers mention India by the name of "Yin-tu".
Q: What is the defining right of a representative democracy? 2724 05b5cc63de4d2b4197774bb1a
5b5cc63de4d2b4197774bb1a- 1the right to votetrue
- 2the right to freedom of speechfalse
- 3the right to petition the governmentfalse
- 4the right to freedom of religionfalse
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Answer : 1. "the right to vote"
Explanation :
Answer: A) the right to vote Explanation: The defining right of a representative democracy is the ability to vote for representatives to make decisions on their behalf. In democratic government, elections are held regularly, in which voters vote for someone who will serve in the levels of local, state, and federal government.
Q: Who invented Electric Generator? 2723 05b5cc6b9e4d2b4197774d74d
5b5cc6b9e4d2b4197774d74d- 1Michael Faradaytrue
- 2Thomas Alva Edisonfalse
- 3Graham Bellfalse
- 4Alfred Nobelfalse
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Answer : 1. "Michael Faraday"
Explanation :
Answer: A) Michael Faraday Explanation: Michael Faraday invented Electric Generator in 1831. The operating principle of electromagnetic generators was discovered in the years of 1831–1832 by Michael Faraday. The principle later called Faraday's law, is that an electromotive force is generated in an electrical conductor which encircles a varying magnetic flux.