Time and Work Practice Test 1 with solutions

Question : 15 of 40

Marks: +1, -0

Netra and Neha alone can do a work in 43 and 41 days respectively. They started working together but Neha left on the starting of the 20th day. Then the remaining work was completed by Netra alone. Find the time taken by Netra to complete the remaining work.

$3 {38}/{41}$ days
3 days
$4 3/{41}$ days
$4 {592}/{1763}$ days
None of these

Validate

Solution:

Work done by Netra and Neha in 19 days
= 19

(1/{43}+1/{41})

{1596}/{1763}

Work left = 1 -

{1596}/{1763}

{167}/{1763}

Netra alone can complete the work in 43 days.
So,

{167}/{1763}

rd part of the work can be done in

(43×{167}/{1763})

days
=

{167}/{41}

4 3/{41}

days.

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