A worker has an increase of \(12\frac{1}{2}\) % in her wages rate per hour but there is a drop of 10% in the number of hours worked per week. If her original weekly wages for a week of 40 hours is ₹ 38,400, then the percentage increase in her total weekly wages is :
1.25%
The correct answer is 1.25%.
To decrease a value by Y%, you multiply the original value by (1 - \frac{Y}{100}). In this problem, the total wage is affected by changes in two factors (rate and hours). The combined effect is not simply the sum or difference of the individual percentage changes. We must calculate the new values for both factors and then calculate the new total before determining the overall percentage change in the total weekly wages.
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Important Questions from Work and Wages
A can complete a work alone in 8 days. B can complete the same work alone in 12 days. C alone complete the same work in 16 days. They complete the work in 3 days with the help of D. If they get Rs.12000 for the work, then how much money does the D get?
If 15 men can complete a work in 16 days by working 8 hours daily, then in how many days will 10 men complete the work by working 12 hours daily?
10 men working 8 hours a day can finish a work in 28 days. In how many days, 8 men working 5 hours a day with complete 50% of that work?
A can do a work in 12 days and B in 16 days. They undertook to do it for Rs. 6000 with the help of ‘C’ they completed the work in 6 days. What is the share of A?
Twenty lamps can be lighted for 6 hr a day for 20 days at a cost of Rs. 100. How much would be the cost of lighting 40 lamps, 8 hr for 12 days?
