Question

25 महिलाएं किसी कार्य को 60 दिनों में पूरा कर सकती है कार्य आरंभ होने के कितने दिनों के बाद 15 महिलाएं और लगाई जानी चाहिए ताकि कार्य 45 दिनों में पूरा कर लिया जाए​

Answer 1

Answer:

25 women can do a piece of work in 60 days. Calculation: Let 15 more women join the work after x days. ∴ The 15 more women should join the work after 20 days.

Step-by-step explanation: brainliest pleaseee

Answer 2

Given,

25 ladies complete a work in 60 days.

Solution,

According to first condition,

Total work,

$\[\begin{array}{l} = 25 \times 60\\ = 1500\end{array}\]$--------(1)

Consider that after x days 15 more ladies required to complete the work in 45 days.

Total work,

$\[\begin{array}{l} = 25x + 40\left( {45 - x} \right)\\ = 25x + 40 \times 45 - 40x\\ = 1800 - 15x\end{array}\]$------(2)

Both equations represent total work.

$\[\begin{array}{l}1500 = 1800 - 15x\\ \Rightarrow 1500 - 1800 = - 15x\\ \Rightarrow - 300 = - 15x\\ \Rightarrow x = 20\end{array}\]$

Hence after 20 days 15 more ladies required to complete the work in 45 days.