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Pratiyogita Mantra

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Mukesh kumar

a year ago

sir I have seen in a made easy workbook, one of the method to prevent interference is to increase circular pitch, sir please explain this and if it is not correct then please inform me.

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Priyanka Pirale

8 months ago

A and B together can do a piece of work in 30 days. B and C together in 20 days. A starts the work and works on it for 5 days , then B takes it up and works for 15 days . Finally C finishes it in 18 days. In how many days can C alone do the work?

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Parikshit Mehlawat

8 months ago

1) Using (A+B) and (B+C) find out their respective efficiency and total work, Total Work=60 units; (A+B)=2 units per day; (B+C)=3 units per day
2) A work for 5 days and B work for 15 days, break B's work into 5+10 days. When A individually works for 5 days and then B work for next 5 days = A+B working for 5 days= A+B's Efficiency*2= 10units.
3) B work for remaninig 10 days, break C's 18 days work into 10+8 days; Just like step 2, B+C 10 day work = 3*10=30 units
4) Remainig work=60 - (30+10)= 20 which is done by C alone in 8 days, therefore C's efficiency = (20/8)= 5/2
5) If C alone had to do all the work= total work/ C's efficiency = 24 Days

SK

Sunny Kumar

a year ago

Sir, last question mein half work done bhol Raha hair woh concept samaj nahi says doubt in that question.

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Abhijith pv

a year ago

for full work 72*15(36*15=half,,) Now remaining work is Half. which is equal to 9*No of mens

Parikshit Mehlawat

8 months ago

Work1 = Work2 = 1/2(Half); dono side 1/2 cancel ho jayega; MDHEW wale formula mein daal kar dekh

Monika Kuhar

a year ago

Hello sir. Please solve this problem : A man and a boy can complete a work together in 24 days. If for the last 6 days man alone does the work then it is completed in 26 days how long the boy will take to complete the work alone?

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Amit singh

a year ago

M+B = 24
Then total work by them.
(M+B) *24
Now. M works for 6 days. Then M+B will be working for 20 days.
Total work by them.
6M + (M+B)20
Equate both the total work. As they are equal works.
(M+B) 24 = 6M + (M+B)20
Solving. We get.
1M = 2B
Efficiency ratio wud be. M :B = 2:1
Put in any equation. Total work will be.
(2+1)24 = 72
Now. Time taken by boy.
Total work / B’s efficiency. = 72/1
72 days.

Varun Mishra

a year ago

यूं आर द बेस्ट
लेकिन एक बात है सर की वो स्केड्यूल नही शेड्यूल होता है शायद।अगर मैं गलत हूँ तो जरूर बताइएगा।

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Srijan Singh

6 months ago

galat ho bhai. Dono pronunciation sahi hai. Ek American hai eK british.

Neha Kumari

a year ago

Thank you sir Time and Work. lesson ka questions solve krne ke liye

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