Disha Expert Team Solutions for Exercise 1: EXERCISE

The sum of $15\%$ of a positive number and $10\%$ of the same number is $70$. What is twice of that number?

In an examination, a student has to get $336$ aggregate marks to pass. A student got $35\%$ of marks and was declared failed by $42$ marks. What are the maximum aggregate marks a student can get?

Mr. Khanna took a loan of $\mathrm{Rs}.10,000$ on Simple interest or two years at the rate $3$ p.c.p.a. The total amount that he will be paying as interest in $2$ years is $3\%$ of his monthly salary. What is his monthly salary?

If the numerator of a fraction is increased by $200\%$ and the denominator is increased by $150\%$, the resultant fraction is $\frac{9}{10}.$ What is the original fraction?

Yesterday Priti typed an essay of $5000$ words at the speed of $60$ words per minute. Today she typed the same essay faster and her speed was $15\%$ more than yesterday. What is the approximate difference in the time she took to type yesterday and the time she took to type today?

$71\%$ of a number is more than its $46\%$ by $120$. What is $30\%$ of that number?

Latika spends $45\%$ of her monthly income on food and $30\%$ of the monthly income on transport. Remaining amount $\mathrm{Rs}.4500$. She saves. What is her monthly income?

Last year, there were $610$ boys in a school. The number decreased by $20\%$ this year. How many girls are there in the school if the number of girls is $175\%$ of the total number of boys in the school this year?