S.chand class 6 Mathematics Chapter 8 Exercise 8B

 Exercise 8B

Question 1

1. Which ratio is greater?

(i) $5: 7$ or $8: 11$

(ii) $11: 21$ or $13: 25$

(iii) $9: 16$ or $15: 22$

2. Jai's class has 8 boys and 10 girls. Ashu's class has 6 boys and 8 girls. Which class has a higher ratio of boys to girls?

3. The ratio of boys to girls in a class is $3: 2$. If there are 33 boys, how many girls are there?

4. The ratio of the number of Sonia's beads to the number of Nandini's beads is $5: 7$. If Sonia has 65 beads. how many beads does Nandini have?

5. The length and breadth of a class room are in the ratio $3: 5$. If the breadth of the room is $20 \mathrm{~m}$, find the length?

6. Bela and Reena share a reward of $₹ 150$ in the ratio $2: 3$. How much does Reena get?

7. Parul, Daisy and Mrinal share 60 sweets in the ratio $9: 7: 4$. How many sweets does Daisy receive?

8. A wire of length $88 \mathrm{~cm}$ is cut into three pieces. The lengths of the pieces are in the ratio $2: 3: 6$. Find the length of the (i) shortest piece (ii) longest piece.

9. (i) Increase $₹ 540$ in the ratio $6: 7$ 

(ii) Decrease $440 \mathrm{~kg}$ in the ratio 11: 5