Time and Work Practice Test 4 with solutions

Question : 40 of 40

Marks: +1, -0

A and B together can do a work in 7 days, C and D together can do it in 9 days and D and E together can do it in 11 days. If all the 3 pairs worked for 2 days each and quit the work after that. Find the remaining work.

${110}/{693}$
$4/{13}$
${361}/{572}$
${215}/{693}$
None of the above

Validate

Solution:

2 day’s work of A and B =

2/7

2 day‘s work of C and D =

2/9

2 day’s works of D and E =

2/{11}

Work done in 6 days =

2/7 + 2/9 + 2/{11}

{478}/{693}

Remaining work = 1 -

{478}/{693}

{215}/{693}

Go to Question:

Prev Question