Of the 120 soaps placed in a box, 36 have been used. What is the percentage of soaps left in the box? (in %)
70
70 is correct.
A percentage compares a part with the whole: (part ÷ whole) × 100. Here the whole is the original 120 soaps.
Soaps left in the box \(=120-36=84\).
Share left as a percent of the original 120 soaps \(=\dfrac{84}{120}\times 100=70\%\).
The price of an LPG cylinder increases from Rs.688 to Rs.860. By what percent should consumption be reduced so that the expenditure on LPG cylinders does not change? (in %)
The value of 25% of 66.67% of 75% of 80% of any number is 6361. Find the value of 40% of that number.
The price of a piece of metal increases from Rs.405 to Rs.486. Find the percentage increase. (in %)