Login

Remember

Register

EasyElimu Questions and Answers

Questions
Unanswered
Tags
Users
Ask a Question

A group of 5 people can do a piece of work in 6 hours. Calculate the time a group of 8 people, working at half the rate of the first group could take to complete the same work.

0 votes

2.4k views

asked Aug 27, 2021 in Mathematics Form 1 by anony mous

A group of 5 people can do a piece of work in 6 hours. Calculate the time a group of 8 people, working at half the rate of the first group could take to complete the same work.

ratio rates and proportions
direct and inverse proportion

Please log in or register to answer this question.

1 Answer

0 votes

answered Aug 27, 2021 by anony mous

People	Rate	Time Taken	Workdone
5	1	6	30
8	½	y	30

8 × ½ × y= 30
4y = 30 (divide by 4)
Y = ³⁰/₄= 7.5 hours

Please log in or register to add a comment.

Related questions

0 votes

1 answer

Three machines A, B and C are set to work together. A working alone takes 6 hours to complete the work; B takes 8 hours while C takes 12 hours. All the three machines started working at the same time. 40 minutes later machine A broke down. B and C continued for another 1 hour before B ran out of fuel and therefore stopped working for 20 minutes while C continued. If B resumed working after 20 minutes, calculate the:

asked Jun 30, 2021 in Mathematics Form 1 by anonymous

ratios
proportions
percentages

0 votes

1 answer

Three people A,B and C can do a piece of work in 45 hours,40hours and 30hours respectively.How long can B take to complete the remaining work alone,if he starts after A and C have worked for 13hours each?

asked Mar 28, 2022 in Mathematics Form 3 by Nbacalvo

compound proportions and rates of work

0 votes

1 answer

In a certain hospital, patients are treated by two doctors in consultation rooms. On average, one doctor takes 3 minutes while the others takes 5 minutes to treat a patient. If the two doctors start to treat patients at the same time, find the shortest time it takes to treat 200 patients.

asked Jun 30, 2021 in Mathematics Form 1 by anony mous

ratio
rates and proportions
direct and inverse proportion

0 votes

0 answers

Mary and Jane working together can cultivate a piece of land in 6 days.Mary alone can complete the work in 15 days.After the two had worked for 4 days Mary withdrew from the services.Find the time taken by Jane to complete the remaining work

asked Dec 27, 2023 in Mathematics Form 3 by 0759967XXX

compound proportions and rates of work

0 votes

1 answer

A farmer has two tractors P and Q. Tractor P, working alone, can plough a piece of land in 5 hours while tractor Q would take 1 2/3 hours less than tractor P.

asked Jun 18, 2021 in Mathematics Form 1 by anony mous

propotion
direct and inverse

Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.

Categories

All categories
Mathematics (632)
- Mathematics Form 1 (257)
- Mathematics Form 2 (174)
- Mathematics Form 3 (175)
- Mathematics Form 4 (26)
English (287)
Kiswahili (559)
Chemistry (663)
Physics (604)
Biology (659)
Geography (537)
History (568)
CRE (365)
IRE (53)
Agriculture (519)
Business Studies (379)
Computer Studies (20)
Home Science (60)
General Questions (432)

6.4k questions

9.6k answers

6 comments

590 users

XML Sitemap

© EasyElimu Educational Services 2024

...