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# There are 4 times as many helicopters as there are fighter jets in San

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Math Expert
Joined: 02 Sep 2009
Posts: 54371
There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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16 Oct 2016, 07:05
00:00

Difficulty:

15% (low)

Question Stats:

82% (01:28) correct 18% (01:14) wrong based on 105 sessions

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There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

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Re: There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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16 Oct 2016, 09:18
Bunuel wrote:
There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

E

S1: Insufficient
S2: Insufficient

On combining S1 & S2, we get 3 possible values for the number of tanks: 180,120,60 - Insufficient
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Joined: 18 Sep 2016
Posts: 37
Re: There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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12 Aug 2017, 01:55
Bunuel wrote:
There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

Can Someone explain how to solve this problem?
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Joined: 06 Jul 2016
Posts: 364
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Re: There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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12 Aug 2017, 02:12
3
tejasridarsi wrote:
Bunuel wrote:
There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

Can Someone explain how to solve this problem?

Hey Buddy, so we're given that for every fighter jet, there are 4 helicopters.
Fighter Jet - F
Helicopter - H
Tanks - T

F:H = 1:4
=> We're given a ratio, which will determine the total number of jets and helicopters.
=> If there are 2 jets, then there are 8 helicopters, and so on..

We need to find the total number of tanks, T = ?

1) For every helicopter there are 15 tanks
=> H : T = 1 : 15
If H = 4, then T = 60
If H = 5, then T = 75
Insufficient.

2) T < 200
T could be 199,198,197,....
Insufficient.

1+2)
F:H:T = 1:4:60
=> T could be 60,120,180..
3 values so it's insufficient.

Hope this helps!
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Re: There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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12 Aug 2017, 02:17
1
There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

from the question, H/J=4/1;
from statement 1, T/H=15/1= H:J:T=40:1:60; infinite numbers are possible
from statement 2, any number less than 200 is possible

1&2 combined. Still insufficient 60,120,180 are possible.
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Joined: 18 Sep 2016
Posts: 37
Re: There are 4 times as many helicopters as there are fighter jets in San  [#permalink]

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12 Aug 2017, 07:20
akshayk wrote:
tejasridarsi wrote:
Bunuel wrote:
There are 4 times as many helicopters as there are fighter jets in Sangala's Army. What is the number of tanks in the Sangala's army?

(1) There are 15 Tanks for every helicopter in Sangala's army

(2) There are less than 200 tanks in Sangala's army

Can Someone explain how to solve this problem?

Hey Buddy, so we're given that for every fighter jet, there are 4 helicopters.
Fighter Jet - F
Helicopter - H
Tanks - T

F:H = 1:4
=> We're given a ratio, which will determine the total number of jets and helicopters.
=> If there are 2 jets, then there are 8 helicopters, and so on..

We need to find the total number of tanks, T = ?

1) For every helicopter there are 15 tanks
=> H : T = 1 : 15
If H = 4, then T = 60
If H = 5, then T = 75
Insufficient.

2) T < 200
T could be 199,198,197,....
Insufficient.

1+2)
F:H:T = 1:4:60
=> T could be 60,120,180..
3 values so it's insufficient.

Hope this helps!

Thanks a lot! It helped
Re: There are 4 times as many helicopters as there are fighter jets in San   [#permalink] 12 Aug 2017, 07:20
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