Subject: General Aptitude · Chapter: Time and Work · Exam: · Marks: · Difficulty:
The daily wages of a worker are ₹ 100 . Five workers can do a work in 10 days. If you pay ₹ 20 more daily, they agree to do 25\% more work daily. If the proposal is accepted, then the total amount that could be saved is
(a)₹ 200
(b)₹ 250
(c)₹ 300
(d)₹ 500
Answer
Answer (as printed): A
Explanation
5 workers' 1 day's work $=\frac{1}{10}$. 5 workers' 1 day's work on increasing wages $=125\%$ of $\frac{1}{10}=\frac{125}{100} \times \frac{1}{10}=\frac{1}{8}$. So, now the work is done in 8 days. Original wage bill $=₹(100 \times 5 \times 10)=₹5000$. New wage bill $=₹(120 \times 5 \times 8)=₹4800$. $\therefore$ Amount saved $=₹(5000-4800)=₹200$.
Explanation as extracted from the printed page; notation may be imperfect.