Time and Work testOnline version Time and Work test by infomind Online tests 1 Ramesh alone does a piece of work in 4 days and Suresh does it in 12 days. In how many days will the two do it together? a a) 3 days b b) 1.5 days c c) 4 days d 8 days 2 Pranesh and Sumesh can finish a work in 16 days while Pranesh can do the same work in 24 days. In how many days can Sumesh alone finish the same work? a a) 40 days b b) 25 days c c) 48 days d d) 20 days 3 Vinod can do a work in 15 days, Vijay in 25 days and Vinay in 30 days. How long will they take to do the work if they work together? a a) 12 days b 7 1/7 days c c) 70 days d d) 20 days 4 c) 70 days d) 20 days If A, B and C together can finish a piece of work in 4 days, A alone in 12 days and B in 18 days, then C alone can do it in a a) 21 days b b) 15 days c c) 12 days d d) 9 days 5 3 men or 6 women can do a piece of work in 20 days. In how many days will 12 men and 8 women do the same work? a 7/2 b 15/4 c c) 5 d d) 4 6 Some persons can do a piece of work in 12 days. Two times the number of those per- sons will do half of that work in a a) 3 days b b) 4 days c c) 6 days d d) 12 days 7 3 men can do a work in 6 days. After 2 days 3 more men joined them. How many days will they take to complete the remaining work? a a) 5 days b b) 4 days c c) 3 days d d) 2 days 8 A is twice as good a workman as B and they took 7 days together to do the work. B alone can do it in: a a) 12 days b b) 18 days c c) 21 days d d) 16 days 9 A can do a piece of work in 25 days and B can do the same work in 30 days. They work together for 5 days and then A leaves. B will finish the remaining work in a a) 21 days b b) 11 days c c) 20 days d d) 19 days 10 An army of 2000 men had enough food to last for 30 days. After 10 days 500 more men joined them. How long did the food last then? a a) 20 days b b) 15 days c c) 12 days d d) 16 days 11 Amar can do a piece of work in 15 days. When he had worked for 3 days, Sameer joined him and the remaining work was finished in 8 days. In how many days can Sameer alone fin- ish the whole work? a a) 30 days b b) 27 days c c) 20 days d d) 24 days 12 A, B and C can do a piece of work in 18 days, 27 days and 36 days respectively. They start working together. After working for 4 days, A goes away and B leaves 7 days be- fore the work is finished. Only C remains at work from beginning to end. In how many days was the whole work done? a a) 17 days b b) 18 days c c) 16 days d d) 15 days 13 A and B can do a piece of work in 6 days. B and C in 4 days and A and C in 5 days. How long will they take to complete the work if they work together? a 3.9/37 days b 15days c 1.23/37days d 6.9/37days 14 A man, a woman or a boy can do a piece of work in 3,4 and 12 days respectively. How many boys must assist 1 man and 1 women to do the work in 1 day? a a) 5 boys b b) 6 boys c c) 2 boys d d) 20 boys 15 Two pipes can fill a tank in 9 hours and 12 hous respectively. In how much time will they fill the tank when opened together? 1 1 a 3 1/2 hours b 5 1/7 hours c c) 5 hours d 3 2/3 hours 16 A tap can fill a tank in 8 hours and an- other can empty it in 16 hours. If both the taps are opened simultaneously, the time (in hours) to fill the tank is: a 8 b 10 c 16 d 24 17 A cistern can be filled by a pipe in 15 hours. But due to a leak in the bottom the cis- tern is just full in 20 hours. When the cistern is full, the leak can empty it in: a a) 60 hours b b) 40 hours c c) 45 hours d d) 30 hours 18 A cistern can be filled by pipes A and B in 20 hours and 30 hours respectively. When full, the tank can be emptied by pipe C in 60 hours. If all the taps be turned on at the same time the cistern will be full in a a) 10 hours b b) 15 hours c c) 16 hours d d) 30 hours e a) 10 hours f b) 15 hours 19 Two pipes A and B can separately fill a tank in 12 minutes and 15 minutes respec- tively. Both the pipes are opend together but 4 minutes after the start, pipe A is turned off. How much time will it take to fill the tank? a a) 11 min b b) 12 min c c) 6 min d d) 8 min 20 Two pipes A and B can fill a cistern in 24 minutes and 32 minutes respectively. If both the pipes are opened together, then after how many minutes B should be closed so that the tank is full in 18 minutes? a a) 6 b b) 8 c c) 1 0 d d) 1 2
New game