## RS Aggarwal Class 8 Solutions Chapter 13 Time and Work Ex 13B

These Solutions are part of RS Aggarwal Solutions Class 8. Here we have given RS Aggarwal Solutions Class 8 Chapter 13 Time and Work Ex 13B.

Other Exercises

Question 1.
Solution:
A’s 1 day’s work = $$\\ \frac { 1 }{ 10 }$$
B’s 1 day’s work = $$\\ \frac { 1 }{ 15 }$$

Question 2.
Solution:
A man’s 1 day work = $$\\ \frac { 1 }{ 5 }$$
Man and his son’s 1 days work = $$\\ \frac { 1 }{ 3 }$$

Question 3.
Solution:
A’s 1 day’s work = $$\\ \frac { 1 }{ 16 }$$
B’s 1 day’s work = $$\\ \frac { 1 }{ 12 }$$

Question 4.
Solution:
Let B can do a work in = x days
Then A can do the work

Question 5.
Solution:
Let B’s 1 day’s work = x
Then A’s 1 day’s work = 2x

Question 6.
Solution:
Total wages = Rs. 3000
A’s 1 day’s work = $$\\ \frac { 1 }{ 10 }$$
B’s 1 day’s work = $$\\ \frac { 1 }{ 15 }$$

Question 7.
Solution:
Ratio in the rates of working of A and B = 3:4
Ratio in time = $$\\ \frac { 1 }{ 3 }$$ : $$\\ \frac { 1 }{ 4 }$$
= $$\\ \frac { 4:3 }{ 12 }$$
= 4 : 3 (c)

Question 8.
Solution:
A and B’s 1 day’s wok = $$\\ \frac { 1 }{ 12 }$$
B and C’s 1 day’s work = $$\\ \frac { 1 }{ 20 }$$
C and A’s 1 day’s work = $$\\ \frac { 1 }{ 15 }$$

Question 9.
Solution:
3 men = 5 women
1 man = $$\\ \frac { 5 }{ 3 }$$ women 5
6 men = $$\\ \frac { 5 }{ 3 }$$ x 6 = 10 women

Question 10.
Solution:
A’s 1 day’s work = $$\\ \frac { 1 }{ 15 }$$
Then B’s 1 day’s work = $$\\ \frac { 1 }{ 10 }$$ x $$\\ \frac { 100+50 }{ 100 }$$
= $$\\ \frac { 1 }{ 15 }$$ x $$\\ \frac { 150 }{ 100 }$$
= $$\\ \frac { 1 }{ 10 }$$
B will finish the work in = 10 days (a)

Question 11.
Solution:
A’s 1 hour’s work = $$\\ \frac { 2 }{ 15 }$$
A and B’s ratio in work = $$\\ \frac { 100-20 }{ 100 }$$ : 1
= $$\\ \frac { 80 }{ 100 }$$ : 1
= $$\\ \frac { 4 }{ 5 }$$ : 1

Question 12.
Solution:
A’s 1 day’s work = $$\\ \frac { 1 }{ 20 }$$
B’s 1 day’s work = $$\\ \frac { 1 }{ 12 }$$

Question 13.
Solution:
A’s 1 days work = $$\\ \frac { 1 }{ 25 }$$
B’s 1 days work = $$\\ \frac { 1 }{ 20 }$$

Question 14.
Solution:
First pipe 1 minutes work = $$\\ \frac { 1 }{ 20 }$$
Second pipe 1 minutes work = $$\\ \frac { 1 }{ 30 }$$

Question 15.
Solution:
First tap’s 1 hours work to fill = $$\\ \frac { 1 }{ 8 }$$
Second tap’s 1 hours work to empty = $$\\ \frac { 1 }{ 16 }$$
Both 1 hour can fill the cistern

Question 16.
Solution:
First pump’s 1 hr work to fill = $$\\ \frac { 1 }{ 2 }$$
Due to leakage, tank is filled in $$2\frac { 1 }{ 3 }$$ hour

Question 17.
Solution:
First inlet pipe’s 1 hour work = $$\\ \frac { 1 }{ 10 }$$
Second inlet pipe’s 1 hour work = $$\\ \frac { 1 }{ 12 }$$

Hope given RS Aggarwal Solutions Class 8 Chapter 13 Time and Work Ex 13B are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.