Time and work formulas with examples for SSC and Bank Exams

Practice Questions of time and work with Answers

Q.1. A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in.

$$ (A) \ {1\over4} \ day$$

$$ (B) \ {7\over24}\ day$$ 

$$ (C) \ 3{3\over7}\ day$$ 

$$ (D) \ 4 \ days $$

Q.2. A and B can do a piece of work in 12 days. B and C in 15 days and C and A in 20 days, If A, B and C work together, they will complete the work in:

$$ (A) \ 5 \ day$$ 

$$ (B) \ 7{5\over6}\ day$$ 

$$ (C) \ 10\ day $$ 

$$ (D) \ 15{2\over3}\ day $$

Q.3. A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days, C alone can do the work in :

(A) 60 days

(B) 120 days

(C) 80 days

(D) 30 days

Q.4. A can do a piece of work in 4 hours; B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it ?

(A) 10 hours

(B) 12 hours

(C) 8 hours

(D) 24 hours

Q.5.A can complete a piece of work in 6 days while B can complete the same work in 12 days. If they work together and complete it, the portion of the work done by A is

$$ (A) \ {1\over3} \ $$ 

$$ (B) \ {2\over3}\ $$ 

$$ (C) \ {1\over4} $$ 

$$ (D) \ {1\over2}\ $$

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