17 questions found
X is an alloy of copper and zinc. Y is an alloy containing 80% of copper, 4% of zinc and 16% of tin. A fused mass of X and Y is found to contain 74% of copper, 16% of zinc and 10% of tin. What is the percentage of copper in X ?
In what duration of time will ₹3300 become ₹3399 at 12% per annum interest compounded quarterly ?
Eight men and 24 women can finish a piece of work in one day while 12 men and 18 women can also finish it in one day. What is the time taken by 24 men and 72 women to finish the work ?
There are two employees X and Y. X's salary is first increased by 12% and then decreased by 10%, and Y's salary is first increased by 10% and then decreased by 12%. If their salaries at present are equal, then what was the ratio of initial salary of X to initial salary of Y?
Two persons X and Y leave place P for place Q at 7:00 a.m. and 7:10 a.m. respectively along the same path. X walks at a speed of 4.8 km/hr and Y walks at a speed of 6 km/hr. How many kilometres from place P will X meet Y?
Two trains X and Y are travelling in the same direction at 100 km/hr and 60 km/hr respectively. Train X crosses a man in train Y in 9 seconds. What is the length of train X?
A person borrows a sum of ₹16,000 on simple interest at the beginning of a year. After 4 months, ₹24,000 more is borrowed at a rate of interest double the previous one. At the end of the year, the total interest on both the loans is ₹4800.
What is the ratio of the interest on the first loan to the interest on the second loan ?
A person borrows a sum of ₹16,000 on simple interest at the beginning of a year. After 4 months, ₹24,000 more is borrowed at a rate of interest double the previous one. At the end of the year, the total interest on both the loans is ₹4800. What is the initial rate of interest per annum ?
X is an alloy of copper and zinc. Y contains 80% copper, 4% zinc and 16% tin. The fused mass contains 74% copper, 16% zinc and 10% tin. What is the percentage of zinc in X ?
A single discount which is equivalent to a series of discounts , , is . What is the value of ?
A reduction of 10 % in the price of sugar enables a person to buy 6.2 kg more for ₹2790 What is the reduced price per kilogram?
What is the greatest possible speed at which a person can walk and so that the time (in hours) required in each case is a whole number?
A person goes downstream at km/h and upstream at km/h by the same boat. What is the ratio of speed of boat in still water to speed of water?
Without stoppages, a train travels at an average speed of km/h and with stoppages it covers the same distance at an average speed of km/h. How many minutes per hour does the train stop?
A train P starts from station X for station Y and another train Q starts from station Y for station X at the same time. After passing each other, P takes 4 hours to reach Y and Q takes 1 hour to reach X. If the average speed of P is 60 km/h, then what is the average speed of Q ?
12 men working 8 hours a day can completely build a wall of length 100 m, breadth 20 cm and height 5 m in 10 days. How many days will 16 men working 10 hours a day require to build a wall of length 200 m, breadth 60 cm and height 5 m ?
X can do a piece of work in 4 days and Y can do the same piece of work in 6 days. Which of the following statements is/are correct ?
I. If X and Y work alternately starting with X, then the piece of work will be finished on the fifth day.
II. If X and Y work alternately starting with Y, then the piece of work will be finished in less than 5 days.
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