Time and Work Class-8 RS Aggarwal ICSE Maths Solutions Goyal

Time and Work Class-8 RS Aggarwal ICSE Maths Solutions Goyal Brothers Prakashan Chapter-11. We provide step by step Solutions of Exercise / lesson-11 Time and Work for ICSE Class-8  RS  Aggarwal Mathematics.

Our Solutions contain all type Questions of Exe-11 A, Exe-11 B, with Notes to develop skill and confidence.  Visit official Website  CISCE  for detail information about ICSE Board Class-8 Mathematics.

Board ICSE
Publications Goyal brothers Prakshan
Subject Maths
Class 8th
Chapter-11 Time and Work
Writer RS Aggrawal
Book Name Foundation
Topics Solution of Exe-11.a, 11.b
Academic Session 2021-2022

Time and Work Class-8 RS Aggarwal ICSE Maths Solutions Goyal Brothers Prakashan Chapter-11


–: Select Topics :–

Notes 

Exe-11 A,

 Exe-11 B,


Notes on Time and Work 

If a person can complete a work in n  days, then in 1 day he does 1/ n^{th} of the work. We have

If a person completes of a work in 1  day, then he requires n  number of days to complete the work

 If part of the work has been done and the remaining part of the work has to be done by a person A, then

No. \ of\ days \ to\ complete\ the\ work=  \frac{Remaining\ Part\ of\ the\ Work}{A's\ 1\ Day\ Work}

If A\ is\ m  times as good ·a workman as B , then

i) Ratio of work done by A \ and\  B  in the same time = m : 1

ii) Ratio of time taken by A \ and\  B  to finish the work =1: m

If some persons work together to do a piece of work, then the money paid to them is divided among them in the ratio of their one day’s (or one hour’s) work.

(i) Suppose A can finish a piece of work in 8 days.

Then, work done by A in 1 day = ¹/₈ [by unitary method].

(ii) Suppose that the work done by A in 1 day is ¹/₆

Then, time taken by A to finish the whole work = 6 days.

General Rules

(i) Suppose if a person A can finish a work in n days.

Then, work done by A in 1 day = 1/nᵗʰ part of the work.

(ii) Suppose that the work done by A in 1 day is 1n1n

Then, time taken by A to finish the whole work = n days.

(ii)If A\ is\ m  times as good ·a workman as B , then

i) Ratio of work done by A \ and\  B  in the same time = m : 1

ii) Ratio of time taken by A \ and\  B  to finish the work =1: m

5) If some persons work together to do a piece of work, then the money paid to them is divided among them in the ratio of their one day’s (or one hour’s) work.


 Time and Work Exe-11 A,Class-8 RS Aggarwal ICSE Maths Solutions Goyal Brothers Prakashan

(Page- 145-146)

Question 1:

A can do a piece of work in 15 days while B can do it in 10 days ……………….. to do it ?

Question 2:

A, Band C can do  a piece of work in 12 days, 15 ………………….. all together finish it ?

Question 3:

A and B together can do ………………… take to do it ?

Question 4:

……………………

……………………

…………………..

……………………

Question 20:

A pipe can fill a tank in 16 hours. Due to a leak ………………… leak take to empty it ?


Time and Work Exe-11 B,

Goyal Brothers Prakashan ICSE Class-8 Mathematics

(Page 146-147)

Question 1:

If a work can be completed by A in 30 days and by B in 60 days, then the number of days taken by them to finish the work, working together, is :

……………..

Question 2:

A can do a job in ……………. do the job alone ?

……………….

Question 3:

…………………….

…………………….

…………………….

Question 12:

A cistern can be filled by pipes A and B in ……………… will be  full in

…………………

–: End of Time and Work Solutions for ICSE Class-8  :–

Return to- RS Aggarwal Solutions for ICSE Class-8 Goyal Brothers Prakashan

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13 thoughts on “Time and Work Class-8 RS Aggarwal ICSE Maths Solutions Goyal”

  1. Hi sir I’m very happy with ur superb website, very helpful for my boy nd study.without any stress which reflected by getting very good grades .He used to learn how to solve even critical questions.im very thankful to all persons who created this website. .plz keep continuing.this grt journey through which many students are benifited.with loads of thnx .

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  2. Hi sir, why are the solutions for maths grade 8 stopped reflecting. Previously all exercise solutions were visible but now it just shows blank. Please help. Thank you

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