Aptitude - Chain Rule - Discussion

Discussion :: Chain Rule - General Questions (Q.No.12)

12. 

In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with remaining meal?

[A]. 20
[B]. 30
[C]. 40
[D]. 50

Answer: Option B

Explanation:

There is a meal for 200 children. 150 children have taken the meal.

Remaining meal is to be catered to 50 children.

Now, 200 children 120 men.

50 children 120 x 50 = 30 men.
200


Saranya said: (Feb 4, 2011)  
Why 120/200? please explain.

Avijeet said: (Sep 4, 2011)  
@ seranya--
its given that
200 children= 120 men
So 1 child= 120/200 men
hence, 150 child=120/200*150= 90 men.

so meal will be available for 120-90= 30 men

Chalam said: (Dec 27, 2011)  
It's simple like this.

If 5 pens cost 25 Rs
1 pen cost?
25/5 = 5.

Hemanth said: (Feb 3, 2012)  
In this type of problems how to find the proportionality (Direct or Indirect) ?

Geethu said: (Mar 28, 2012)  
Ya its eazy....

200 children = 120 men
1 children = 120/200 men

we have food remaining for 50 children
So, 50 children = 120/200*50 = 30 men

Satish said: (Apr 5, 2012)  
200 children= 120 men ---- (1).
50 children= 30 men ---- (2).
150 children takes the food, so there is food for only 50 children
from 2.
30 men will be catered the remaining meal.

Rukhsar said: (Nov 3, 2013)  
1 men can have food = 1/120.

1 child can have food = 1/200.

150 child can have food = 150*1/200 = 150/200.

Left food = 1-150/200 = 50/200.

1/120 portion of the food taken by = 1 men.

50/200 portion of the food taken by = 1/(1/120)*(5/20) = 30.

Macdon said: (Feb 20, 2014)  
200 children = 120 men.
1 child = 120/200.
= 0.6.

Hence, 50 children - 0.6*50 = 30 men.

Bbc said: (Aug 31, 2014)  
They are just asking how many people are equal to 50 children.

120:x = 200:50.

x = (120*50)/200 = 30.

Indiabix said: (Sep 9, 2014)  
200c = 120m.
=> 100c = 60m.
=>50c = 30m.

Out of 200c, 150c have taken meal.
So, remaining food is for 50c which is equal to 30m.

Ram said: (Jun 11, 2015)  
Let man = m and children = y.

Then meal of 120m = 200c.
Meal of 1m = (200/120)c.

1m = 5/3c.
i.e (5/3)c = 1m.

5c = 3m.
1c = (3/5) m.

50c = (3/5*50) m.
50c = 30m.

Ashok said: (Jun 27, 2015)  
Ratio for 120 and 200 = 3:5.

Then, 150/5 = 30.

So 1 part = 30,

Then 3 parts for men is 3*30 = 90 and 5 parts for children is 5*30 = 150.

So 90 men = 150 children.

Remaining men = 30.

Bindubrisk said: (Mar 17, 2016)  
It's so simple here 120:200 is nothing but 3:5 means 3 men =5 children means 1 child=3/5 men and remaining 50 children=50* (3/5) =30 and its the answer it is easy.

Aku said: (Jul 15, 2016)  
@Hemanth proportionality is clearly visible, more men catered imply more children catered there is direct proportionality.
i.e
120 : x :: 200 : 150.
200 * x = 150 * 120.
x = 90 so, 150 children are equivalent to 90 men, remaning food is for men = 120 - 90 = 30.

Farhaaz said: (Sep 27, 2016)  
The solution to this type of question can be found from observation.

Given that 150 children out of 200 children have taken the meal.i.e, 3/4th of children have been supplied by the meal. So 1/4 the of the children have to be supplied with the remaining meal.

As it is given that 120 men = 200 children.

Therefore the remaining meal must be supplied to 1/4th of 120 men viz.,30 men.

Sowmiya said: (Aug 30, 2017)  
How 120/200? Please explain.

Zoizo said: (Jul 3, 2018)  
Shouldn't it be 200*120/50?

Saiganesh Murarishetty said: (Aug 25, 2018)  
Here; Remaining children are 50 and this is 25% of 200, so 25% of men is 30.

Atul said: (Nov 13, 2019)  
120/200 = men : children.
15men = 25 children.

200-150 = 50(consumed).
(25x2)Children = 50(remaning).

:.(15x2)men = 30(remaining).

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