Question

Jacob can do a job in 24 days he works for 16 days and left Ben complete the remaining work in 10 days in how many completed the 30% of the job?
1) 9
2) 12
3) 8
4) 16​

Answer 1

Answer:

9 days

Step-by-step explanation:

30% of the work is completed in 9 days.

Answer 2

Given:

Jacob can do a job in 24 days he works for 16 days and left Ben complete the remaining work in 10 days in how many completed the 30% of the job?

Solution:

Know that Jacob can complete the 100% work in 24.

Therefore in 16 days he complete, $\[66\frac{2}{3}\% \]$

Find the remaining task,

$\[\begin{array}{l} = 100\% - 66\frac{2}{3}\% \\ = 33\frac{1}{3}\% \end{array}\]$

It means, Ben completes $\[33\frac{1}{3}\% \]$ in 10 days.

therefore he van complete the 100% work in 30 days,

Apply unitary method to calculate number of days taken by Ben to complete 30 % work,

$\[\begin{array}{l}100\% \to 30\,\,{\rm{days}}\\30\% \times 100\% \to 30 \times 30\% \\30\% \to 9\,\,{\rm{days}}\end{array}\]$

Hence Ben completed the 30% of the job in 9 days.