Monica Capoor Solutions for Chapter: Comparing Quantities I Percentage, Exercise 4: EXERCISE

A mixture consists of $45\frac{5}{11}\%$ sand, $36\frac{4}{11}\%$ gravel and rest cement. Find the weight of mixture contains $12.5 \mathrm{Kg}$ wt of sand. Also determine the weight of mixture that will contain $4 \mathrm{Kg}$ wt of cement. 

Mrs Rewari spends $25 \%$ of her salary on house rent, $30\%$ on the education of her children and $40 \%$ on household expenditure. Find her salary if she saves$₹1470$ per month.

In an election, the winning candidate received $48000$ votes which represented $60\%$ of the electorate. Calculate the number of electorate.

In an election, the winning candidate received $48000$ votes which represented $60\%$ of the electorate. The only other candidate secured votes from $25\%$ of the electorate. Calculate the number of people did not cast votes .

 A medical student has to secure $40 \%$ marks to pass. He gets$80$ marks and fails by$60$ marks. Find the maximum number of marks.

After a$20 \%$ hike, the cost of a refrigerator is$₹ 15300$. What was the original price of this refrigerator?

 A number is increased by $10 \%$ and then decreased by$10 \%$. If the increase or decrease is $\mathrm{x}\%$, then find the net increase or decrease per cent.

 If Suraj's collection of stamps is $20 \%$ less than Sant's collection, then by what per cent is Sant's collection of stamps more than that of Suraj's?