Question

Solve the following questions: -
1. Find three rational numbers which are equivalent to (i) 2/5 (ii) -3/7.
2. Reduce 35/-15 and -36/-216 in standard form.
3. Represent 3/2 and -3/4 on the number line.
4. Write any five rational numbers between -1/2 and -3/2.
5. Solve the following:
a. (20/3) × ( -81/16)
b. (3/4) ÷ (-5/24)
6. If the sum of two rational numbers is −9/6 and one of them is −4/6, find the other number.
7. Arrange the following rational numbers in the ascending order:
-1/3, -5/3, -2/9
8. Write down the rational number whose numerator is the smallest three-digit number and denominator is the largest four-digit number.
9. Manvi saves Rs. 9000 from her salary every month. If it is 10% of her salary. Find her salary.
10. What sum of money lent out at 12 % p.a. simple interest would
produce Rs. 9000 as interest in 2 years?
11. Mithali buys a TV at Rs.12,000 and sells it at a profit of 20%. How
much money does she get?
12. Out of 24000 voters in a constituency 20% voted. Find the number of
voters who did not vote?
13. Convert each part of the ratio 1:3:6 into percentage.
14. A person’s salary increased from Rs. 50000 to Rs. 60000 after an year.
Find the percent increase in his salary.
15. The cost of 3 envelopes is Rs.15. Find the cost of 5 envelopes.

Answer 1

Answer:

15)(15/3)×5=rs.25 is the answer