19
Q:

If 12 men can reap 120 acres of land in 36 days, how many acres of land can 54 men reap in 54 days?

A) 710 acres B) 760 acres
C) 810 acres D) 860 acres

Answer:   C) 810 acres



Explanation:

12 men120 acres36 days54 men?54 days

 As 12 men can reap 120 acres, 54 men will be able to reap more acres in 36 days, 120 acres of land was reaped, so in 54 days, more land will be reaped.

 

Thus, the numbers of acres that can be reaped by 54 men in 54 days = 5412x120x5436 = 810 acres

Q:

The ratio of the number of boys to the number of girls in a school of 640 students, is 5 : 3. If 30 more girls are admitted in the school, then how many more boys should be admitted so that the ratio of boys to that of the girls, becomes 14 : 9.

 

A) 30 B) 25
C) 15 D) 20
 
Answer & Explanation Answer: D) 20

Explanation:
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0 54
Q:

If the base radius of 2 cylinders are in the ratio 3 : 4 and their heights are in the ratio 4 : 9, then the ratio of their volumes is:

 

A) 2:1 B) 1:4
C) 1:2 D) 4:1
 
Answer & Explanation Answer: B) 1:4

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0 10
Q:

If a : b = 2 : 3 and c : b = 5 : 6, then a : b : c is equal to:

 

A) 10 : 15 : 18 B) 6 : 9 : 16
C) 4 : 6 : 5 D) 6 : 9 : 12
 
Answer & Explanation Answer: C) 4 : 6 : 5

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0 40
Q:

If a : b = 2 : 5, c: b = 3 : 4, then a : b : c is equal to:

 

A) 2 : 5 : 4 B) 6 : 15 : 20
C) 2 : 5 : 3 D) 8 : 20 : 15
 
Answer & Explanation Answer: D) 8 : 20 : 15

Explanation:
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0 340
Q:

Two numbers are in the ratio 5 : 7. If the first number is 20, then the second number will be:

 

A) 8 B) 22
C) 28 D) 18 
 
Answer & Explanation Answer: C) 28

Explanation:
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3 366
Q:

If x is the mean proportional between 12.8 and 64.8 and y is the third proportional to 38.4 and 57.6, then 2x : y is equal to:

 

A) 2 : 3 B) 4 : 5
C) 3 : 4 D) 1 : 2
 
Answer & Explanation Answer: A) 2 : 3

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2 314
Q:

If x is the mean proportional between 12.8 and 64.8 and y is the third proportional to 38.4 and 57.6, then 2x : y is equal to:

 

A) 2 : 3 B) 4 : 5
C) 3 : 4 D) 1 : 2
 
Answer & Explanation Answer: A) 2 : 3

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2 461
Q:

If the radius of the circumcircle of an equilateral triangle is 8 cm, then the measure of radius of its incircle is:

 

A) 16cm B) 4cm
C) 12cm D) 8 cm
 
Answer & Explanation Answer: B) 4cm

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1 337