a) 30 days b) 40 days c) 60 days d) 70 days Answer: c Explanation:$$\eqalign{ & {\text{Let}}\,{\text{A's}}\,{\text{1}}\,{\text{day's}}\,{\text{work}} = ...
View QuestionA and B can do a job together in 7 days. A is 1*3/4 times as efficient as B. The same job can be done by A alone in :
a) $$9\frac{1}{3}$$ days b) 11 days c) $$12\frac{1}{4}$$ days d) $$16\frac{1}{3}$$ days Answer: b Explanation: $$\eqalign{ & \left( ...
View QuestionX can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
a) $$13\frac{1}{3}$$ days b) 15 days c) 20 days d) 26 days Answer: a Explanation: Work done by X ...
View QuestionA and B together complete a piece of work in T days. If A alone completes the work in T + 3 days and B alone completes the piece of work in T + 12 days, what is T ?:
a) 3 days b) 9 days c) 12 days d) None of these Answer: d Explanation:$$\eqalign{ & {\text{A's ...
View QuestionGeorge takes 8 hours to copy a 50-page manuscript while Sonia can copy the same manuscript in 6 hours. How many hours would it take them to copy a 100-page manuscript, if they work together ?
a) $$6\frac{6}{7}\,\,{\text{hours}}$$ b) $${\text{9 hours}}$$ c) $$9\frac{5}{7}\,\,{\text{hours}}$$ d) $${\text{14 hours}}$$ Answer: a Explanation: Number of pages ...
View QuestionP can complete 1/4 of a work in 10 days, Q can complete 40% of the same work in 145 days. R, complete 1/3 of the work in 13 days and S, 1/6 of the work in 7 days. Who will be able complete the work first ?
P can complete $$\frac{1}{4}$$ of a work in 10 days, Q can complete 40% of the same ...
View QuestionA can knit a pair of socks in 3 days. B can knit the same pair of socks in 9 days. If they are knitting together, then in how many days will they knit two pairs of socks ?
a) 3 days b) 4 days c) $${\text{4}}\frac{1}{2}$$ days d) 5 days Answer: c Explanation: Number of ...
View QuestionA can finish a work in 18 days and B can do the same work in half the time take by A. Then, working together, what part of the same work they can finish in a day ?
a) $$\frac{1}{6}$$ b) $$\frac{1}{9}$$ c) $$\frac{2}{5}$$ d) $$\frac{2}{7}$$ Answer: a Explanation:$$\eqalign{ & {\text{A's 1 ...
View QuestionIf one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:
a) 80 min b) 100 min c) 20 min d) 25 min Answer: c Explanation: Efficiency of pipe A, $$\frac{{100}}{{20}}$$ ...
View QuestionRaj can do a piece of work in 20 days. He started the work and left after some days, when 25% work was done. After it Abhijit joined and completed it working for 10 days. In how many days Raj and Abhijit can do the complete work, working together?
a) 8 b) 6 c) 10 d) 12 Answer: a Explanation: Efficiency of Raj = $$\frac{{100}}{{20}}$$ = 5% Work completed ...
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