English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

A soap factory produces 9600 soaps in 6 days working 15 hours a day. In how many days will it produce 14400 soaps working 3 more hours a day?

Advertisements
Advertisements

Question

A soap factory produces 9600 soaps in 6 days working 15 hours a day. In how many days will it produce 14400 soaps working 3 more hours a day?

Sum
Advertisements

Solution

Let the required number of days be x.

Soaps Hours Days
9600 15 6
14400 (15 + 3) = 18 x

To produce more soaps more days required.

∴ It is direct proportion

∴ Multiplying factor = `14400/9600`

If more hours spend, less days required.

∴ It is indirect proportion

∴ Multiplying factor = `15/18`

∴ x = `6 xx 14400/9600 xx 15/18`

`(6 xx 14400 xx 15)/(9600 xx 18)`

x = `15/2`

`15/2` days will be needed.

shaalaa.com
Compound Variation
  Is there an error in this question or solution?
Chapter 4: Life Mathematics - Exercise 4.4 [Page 150]

APPEARS IN

Samacheer Kalvi Mathematics [English] Class 8 TN Board
Chapter 4 Life Mathematics
Exercise 4.4 | Q 4 | Page 150

RELATED QUESTIONS

A can finish a job in 3 days whereas B finishes it in 6 days. The time taken to complete the job working together is __________ days


If 5 persons can do 5 jobs in 5 days, then 50 persons can do 50 jobs in _________ days


A alone can do a piece of work in 35 days. If B is 40% more efficient than A, then B will finish the work in ___________ days


A alone can do a work in 10 days and B alone in 15 days. They undertook the work for ₹ 200000. The amount that A will get is ________


A and B can do a piece of work in 12 days, while B and C can do it in 15 days where as A and C can do it in 20 days. How long would each take to do the same work?


Carpenter A takes 15 minutes to fit the parts of a chair while Carpenter B takes 3 minutes more than A to do the same work. Working together, how long will it take for them to fit the parts for 22 chairs?


A is thrice as fast as B. If B can do a piece of work in 24 days then, find the number of days they will take to complete the work together


If 32 men working 12 hours a day can do a work in 15 days, then how many men working 10 hours a day can do double that work in 24 days?


Amutha can weave a saree in 18 days. Anjali is twice as good a weaver as Amutha. If both of them weave together, then in how many days can they complete weaving the saree?


A small-scale company undertakes an agreement to make 540 motor pumps in 150 days and employs 40 men for the work. After 75 days, the company could make only 180 motor pumps. How many more men should the company employees so that the work is completed on time as per the agreement?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×