Csat---math Questions
#1
Two pipes A and B can independently fill a tank completely in 20 and 30 minutes respectively. If both the pipes are opened simultaneously, how much time will they take to fill the tank completely ? [ U.P.S.C ( 2015 ) Pre. ]
#2
Ram and Shyam work on a job together for four days and complete 60% of it. Ram takes leave then and Shyam works for eight more days to complete the job. How long would Ram take to complete the entire job alone ? [ U.P.S.C ( 2016 ) Pre. ]
#3
W can do 25% of a work-in 30 days, X can do 1/4 of the work in 10 days, Y can do 40% of the work in 40 days and Z can do 1/3 of the work in 13 days. Who will complete the work first? [ U.P.S.C ( 2016 ) Pre. ]
#4
P works thrice as fast as Q, whereas P and Q together can work four times as faster as R. If P, Q and R together work on a job, in what ratio should they share the earnings ? [ U.P.S.C ( 2017 ) Pre. ]
#5
A person X can complete 20 % of work in 8 days and another person Y can complete 25 % of the same work in 6 days . If they work together , in how many days will 40 % of the work be completed ? [ U.P.S.C ( 2020 ) Pre. ]
#6
A man takes half time in rowing a certain distance downstream than upstream .What is the ratio of the speed in still water to the speed of current ? [ U.P.S.C ( 2020 ) Pre. ]
#7
A man completes 7/8 of a job in 21 days . How many more days will it take him to finish the job if quantum of work is further increased by 50 % . [ U.P.S.C ( 2021 ) Pre. ]
#8
24 men and 12 women can do a piece of work in 30 days. In how many days can 12 men and 24 women do the same piece of work ? [ U.P.S.C ( 2022 ) Pre. ]
#9
A, B, C working independently can do a piece of work in 8, 16 and 12 days respectively. A alone works on Monday, B alone works on Tuesday, C alone works on Wednesday; A alone, again works on Thursday and so on. Consider the following statements : [ U.P.S.C ( 2023 ) Pre. ] 1. The work will be finished on Thursday. 2. The work will be finished in 10 days. Which of the above statements is/are correct ?
#10
How many females voted for the proposal ?
#11
How many males were undecided ?
#12
How many females were not in favour of the proposal ?
#13
There are 50 students admitted to a nursery class. Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English? [ U.P.S.C ( 2014 ) Pre. ]
#14
Out of a total of 120 musicians in a club, 5% can play all the three instruments, guitar, violin and flute. It so happens that the number of musicians who can play any two and only two of the above instruments is 30. The number of musicians who can play the guitar alone is 40. What is the total number of those who can play violin alone or flute alone ? [ U.P.S.C ( 2014 ) Pre. ]
#15
Out of 130 students appearing in an examination, 62 failed in English, 52 failed in Mathematics, whereas 24 failed in both English and Mathematics. The number of students who passed finally is [ U.P.S.C ( 2015 ) Pre. ]
#16
In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages only and one person can speak all the three languages, then how many persons are there in the group? [ U.P.S.C ( 2015 ) Pre. ]
#17
The number of persons who read magazine X only is thrice the number of persons who read magazine Y. The number of persons who read magazine Y only is thrice the number of persons who read magazine X. Then, which of the following conclusions can be drawn? 1. The number of persons who read both the magazines is twice the number of persons who read only magazine X. 2. The total number of persons who read either one magazine or both the magazines is twice the number of persons who read both the magazines. Select the correct answer using the code given below: [ U.P.S.C ( 2015 ) Pre. ]
#18
19 boys turn out for playing hockey. Of these, 11 are wearing hockey shirts and 14 are wearing hockey pants. There are no boys without shirts and/ or pants. What is the number of boys wearing full uniform ? [ U.P.S.C ( 2018 ) Pre. ]
#19
In a group of 15 people; 7 can read French, 8 can read English while 3 of them can read neither of these two languages. The number of people who can read exactly one language is [ U.P.S.C ( 2019 ) Pre. ]
#20