Question

If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer (in litres) of 150-liter capacity is

Answer 1

Answer:

Step-by-step explanation:

No:of batches =7*60/3

=140

Capacity of mixer=150

Real case scenario output is only 90% of 150=135

Therefore total output=no:of batch of concrete *135

=140*135=18900

Answer 2

The output of a concrete mixer is 18,900 liters.

Question: If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the efficiency of concrete mixer is 90% the output of a concrete mixer (in liters) of 150-liter capacity is:

(a) 15,900 liters

(b) 16,900 liters        

(c) 17,900 liters

(d) 18,900 liters                   

Given data:

Effective working time = 420 minutes (7 hours).

Batching time = 3 minutes.

Output concrete for 1 batching = 150 liters.

The efficiency of concrete mixer = 90%

To find:

The output of a concrete mixer (in liters)

Steps:

Effective working time = 420 minutes (7 hours).

Batching time = 3 minutes.

So that,  

No∶ of batching =$\frac{420}{3}$ = 140.

Output concrete for 1 batching = 150 liters.

The efficiency of concrete mixer = 90%

So that Output concrete for 1 batching = 150 × 0.9 = 135 liters.

For 140 batching = 135*140 = 18,900 liters.

The output of a concrete mixer = 18,900 liters.

Therefore, option (d) 18,900 liters is the correct answer.

To learn more...

1) Ajith and Salam do 2O% of a work in first 3 days.Then Ajith returns because of somephysical problem.Then Salam alone finishes the remaining work in 20 days.How many dayswill Ajith alone take to do the whole work?

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2) When you work this problem,you get t = 3.your teacher requires your answer in a complete sentence.what is your answer?

a.the buses will be 270 miles apart at 1 pm.

b.the buses will be 270 miles apart at 1 am.

c.the buses will be 270 miles apart at 12 am.

d.the buses will be 270 miles apart at 12 pm?

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