If a pipe fills a cistern in 10 hours, then what part of the cistern will the pipe fill in 6 hour working for every alternative hour starting from 1st hour?3/5.1/10.3/10.5/10.

A cistern can be filled by 3 pipes in 30, 40, and 60 minutes respectively, and emptied by an escape pipe in 30 minutes. The three tapes are turned on at noon, but the escape pipe is at the same time accidentally left open and not closed for a quarter of an hour. At what time will the cistern be full?

Two pipes A & B can fill a cistern in 8 and 12 minutes respectively. If both the pipes are opened simultaneously, then after how much time should B be closed so that the tank is filled in 6 minutes?

1. Four taps an individually fill a cistern of water in 1 hour, 2 hours, 3 hours and 6 hours respectively. If all the four taps are opened simultaneously, the cistern can be filled in how many minutes ?A20B30C35D40

A large cistern can be filled by two pipes P and Q in 15 minutes and 20 minutes respectively. How many minutes will it take to fill the Cistern from an empty state if Q is used for half the time and P and Q fill it together for the other half?

Two pipes A and B would fill a cistern in 30 and 40 minutes respectively. Both pipes are opened.Determine the time the first pipe can be turned off so that the cistern may be just filled in 20 minutes?(a) After 10 minutes (b) After 15 minutes(c) After 20 minutes (d) After 22 minutes(e) After 25 minutes98. Mr. Avinash manufactures and sells a single product at a fixed price in a niche market. The sellingprice of each unit is ` 30. On the other hand, the cost, in rupees, of producing x units is 240 + bx + cx2,where b and c are some constants. Avinash noticed that doubling the daily production from 20 to 40units increases the daily production cost by 66.66 percent. However, an increase in daily productionfrom 40 to 60 units results in an increase of only 50 percent in the daily production cost. Assume thatdemand is unlimited and that Avinash can sell as much as he can produce. His objective is tomaximize the profit. How many units should Mr. Avinash produce daily?(a) 70 (b) 100 (c) 130 (d) 150 (e) 18099. Two identical circles intersect so that their centres, and the points at which they intersect, form asquare of side 2 cm. What is the area of the portion that is common to both the circles?(a) 2( – 2) cm2 (b) 2( – 1) cm2(c) 2 cm2 (d) ( – 2) cm2(e) ( – 1) cm2100. What is the number of distinct terms in the expansion of  25x y z  ?(a) 25 (b) 50 (c) 125 (d) 325 (e) 351101. There are five containers A, B, C, D and E each containing 1200 litres of water. The water is beingpumped from one tank to another as follows:From A to B at 30 litres/minuteFrom C to A at 60 litres/minuteFrom A to E at 20 litres/minuteFrom C to D at 50 litres/minuteFrom D to B at 80 litres/minuteFrom B to C at 60 litres/minuteFrom E to D at 10 litres/minuteFrom E to A at 10 litres/minuteWhich tank gets emptied first?(a) A (b) B (c) C (d) D (e) E102. In triangle DEF shown below, points A, B and C are taken on DE, DF and EF respectively such thatEC = AC and CF = BC. If angle D = 40 degress, then what is angle ACB in degrees?(a) 140 (b) 70 (c) 100 (d) 110 (e) 120103. Saga Internationals have conducted a chess competition between young boys and girls, wherein everyindividual has to play exactly one game with every other individual. It was found that in 66 games,both the players were girls, and in 210 games, both were boys. Find the number of games in which oneplayer was a boy and the other was a girl.(a) 210 (b) 222 (c) 252 (d) 276 (e) 290