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CAT - Arithmetic - Percentage - Question -1 $$ x = {-b \pm \sqrt{b^2-4ac} \over 2a}. $$Ravi Shankar wishes to buy an air conditioner (AC) with the money in the bank, which currently is earning interest at the rate of 15 p.c.p.a compounded annually. However, Tanzar, his friend, forecasts that the inflation rate applicable to AC is going to be 14%, 15%, and 16%, respectively, for the next 3 consecutive years and advises Ravi Shankar to postpone the purchase by 3 years. Does Ravi Shankar gain monetarily, if he takes Tanzar’s advice?
CAT - Arithmetic - Percentage - Question - 2In the recently concluded referendum in New York, regarding calling back US troops from Iraq, 600 people voted on a referendum, but after some discussion, the opponents increased by 150%. The motion was then rejected by a majority two times as great as that by which it was formerly passed. How many people voted against the initial referendum?
CAT - Arithmetic - Percentage - Question - 3For admission in a graduation program of Delhi University, 90% of the candidates who appeared for the written test were males and the rest were females; 60% of the males and 80% of the females passed in the written test. Find the total number of students appeared for the written test, if the total number of passed candidates was 1240.
CAT - Arithmetic - Percentage - Question - 4An index of 12 shares contains, among others, the shares of Reliance, HLL, and Infosys with weightage of 7%, 13%, and 15%, respectively. What is the increase in the prices of other shares, if these three rise by 9%, 10%, and 4%, respectively, while the index rises by 6%?
CAT - Arithmetic - Percentage - Question - 5Amul, Binit, and Chand start a business by investing Rs.70,000 that earns them a profit of Rs.42,000 at the end of the year. Amul invests his share in the profit in a scheme that gives him 10% interest compounded annually and Binit invests his share in a scheme that gives him 20% interest compounded annually. Amul gets Rs.2520 as interest at the end of 2 years and Binit gets an interest of Rs.4200 at the end of one year. Find Chand’s investment in the business.
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