A certain quantity of milk is found to be adulterated to the extent of 10%. What proportion of the adulterated milk should be replaced with pure milk to take the purity level to 98%?137
A mall installed 36 cctvs at the beginning of the year. In March they installed 9 additional cctvs and then disconnected 18 in August. How many were still installed at the end of the year.95
A number, when it is divided by 8 it gives a remainder 3 and is divisible by both 3 and 5. Find the number.74
A printer produced 176,400 pages in a given day. If the printer was in operation for seven hours during the day, how many pages did it print per minute?69
A rectangular tank can hold m litres of milk. Find how many litres of milk can a tank hold when all its dimensions are doubled?83
A robber steals half the total no of pastry plus 1/2 tray from a pastry shop. A second robber steals half the remaining no of pastry plus 1/2 tray and so on. After the 5th thief has stolen there are no more pastry left in the pastry shop. What was the total no of pastry did the pastry shop have at the beginning.97
A speedboat whose speed is 15 kmph in still water goes 30 kmph downstream and comes back in a total of 4hrs 30min. What is the speed of the stream in kmph?83
A sphere of 10.5 cm radius is melted. It is then casted into a cuboid of maximum volume. What will be the total surface area of such cuboid?91
A sum of money becomes 2.5 times itself at 12.5% simple interest p.a. What should be the period of investment to get this much return?100
A tiffin box manufacturer reduces the price of his school kids' tiffin from Rs.30/- to Rs.28/- per tiffin and the price of regular tiffin from Rs.24/- to Rs.23/- per tiffin. A caterer normally spends Rs.1440/- a month for tiffin and 3/4 of this is for regular tiffin. How much will they save a month under the new prices?114
A triangle has sides of lengths 10, 24 and k. k is a positive integer. The number of values of k for which this triangle has three acute angles is88
Calculate the area of the triangle in square cm if a right angled triangle where the length of the shorter leg is one third of the length of its hypotenuse. And the length of the shorter leg is 7 cm.86
During a given week an author spends 1/4 of his time preparing first drafts, 3/8 of his time editing the drafts and the rest of the time in preparing final drafts. If he works 48 hours during the week, how many hours did he spend in preparing final drafts?89
Find the speed of the boat in still water if the river runs at 4 km/hr. The time taken by a Suresh to row the boat upstream is 3 as the time taken by him to row it downstream.90
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