15
Q:

6 boys and 8 girls can do job in 10 days , 26 boys & 48 women do work in 2 days. Find time taken by 15 boys and 20 girls to do same work ?

A) 2 days B) 3 days
C) 4 days D) 5 days

Answer:   C) 4 days



Explanation:

One day work of 6 boys and 8 girls is given as 6b + 8g = 1/10 -------->(I)

 


One day work of 26 boys and 48 women is given as 26b + 48w = 1/2 -------->(II)

 

Divide both sides by 2 in (I) and then multiply both sides by 5

Now we get, 15b + 20g = 1/4.

Therefore, 15 boys and 20 girls can do the same work in 4 days.

Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹35000. The share of A (in ₹) in the contracted money will be:

 

A) 7000 B) 21000
C) 14000 D) 15000
 
Answer & Explanation Answer: C) 14000

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3 234
Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹35000. The share of B (in ₹) in the contracted money will be:

 

A) ₹15000 B) ₹14000
C) ₹21000 D) ₹7000
 
Answer & Explanation Answer: C) ₹21000

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0 209
Q:

A and B can complete a piece of work in 15 days and 10 days respectively. They got a contract to complete the work for ₹75000. The share of B (in ₹) in the contracted money will be:

 

A) 45,000 B) 30,000
C) 35,000 D) 40,000
 
Answer & Explanation Answer: A) 45,000

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1 343
Q:

If 16 men working 12 hours a day can complete a work in 27 days, then working for how many hours a day can 18 men complete the work in 24 days ?

 

A) 9 B) 18
C) 16 D) 12
 
Answer & Explanation Answer: D) 12

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1 763
Q:

If 40 men working 12 hours a day can complete a work in 8 days, then how many men working 4 hours a day can complete the same work in 16 days?

 

A) 50 B) 60
C) 54 D) 45
 
Answer & Explanation Answer: B) 60

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2 396
Q:

A can complete a piece of work in 20 days and B can complete 20% of the work in 6 days. If they work together in how many dayscan they finish 50% of the work, if they work together

 

A) 12 B) 6
C) 8 D) 9
 
Answer & Explanation Answer: B) 6

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3 605
Q:

Shyam can complete a task in 12 days by working 10 hours a day. How many hours a day should he work to complete the task in 8 days?

 

A) 12 B) 15
C) 16 D) 14
 
Answer & Explanation Answer: B) 15

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1 743
Q:

5 men and 8 women can complete a task in 34 days, whereas 4 men and 18 women can complete the same task in 28 days. In how many days can the same task be completed by 3 men and 5 women?

 

A) 56 B) 72
C) 64 D) 36
 
Answer & Explanation Answer: A) 56

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5 876