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siddharthkapoor
GMAT Club Reviews PM Intern
Joined: 10 Apr 2018
Last visit: 12 Sep 2025
Posts: 527
Given Kudos: 522
Location: India
Schools: ISB'22 (D)
GMAT 1: 680 Q48 V34
GPA: 3.3
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02 Nov 2020, 05:04
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
57% (02:02) correct
43%
(01:47)
wrong
based on 269
sessions
History
Date
Time
Result
Not Attempted Yet
The petrol tank of a car started to leak. Did the tank get empty in more than 15 hours, when it started to leak? (1 gallon = 128 ounces)
1) The tank had 36 gallons of petrol in the tank when it started to leak.
2) The petrol leaked from the tank at a rate of less than 9 ounces per minute.
1) The tank had 36 gallons of petrol in the tank when it started to leak.
2) The petrol leaked from the tank at a rate of less than 9 ounces per minute.
02 Nov 2020, 16:08
Kudos
Bookmarks
Statement 1- We have no idea about rate of leaking of petrol.
Insufficient'
Statement 2- We have no idea about the initial volume of petrol in tanks
Insufficient
Combing both statements
The tank had 36 gallons or 4608 ounces of petrol in the tank when it started to leak
Amount of leak in 15 hours < 9*60*15 or 8100 ounces
So amount of leak can be greater or smaller than 4608 ounces in 15 hours.
E
Insufficient'
Statement 2- We have no idea about the initial volume of petrol in tanks
Insufficient
Combing both statements
The tank had 36 gallons or 4608 ounces of petrol in the tank when it started to leak
Amount of leak in 15 hours < 9*60*15 or 8100 ounces
So amount of leak can be greater or smaller than 4608 ounces in 15 hours.
E
siddharthkapoor
03 Nov 2020, 01:34
Kudos
Bookmarks
Quote:
Step 1: Understanding statement 1 alone
1) The tank had 36 gallons of petrol in the tank when it started to leak.
As rate of leak is unknown, time cannot be calculated
Insufficient
Step 2: Understanding statement 2 alone
2) The petrol leaked from the tank at a rate of less than 9 ounces per minute.
As tank capacity is unknown, time cannot be calculated
Insufficient
Step 3: Combining
Tank capacity = 36*128 ounces
rate of leak < 9*60 ounces per hour
Using RT = W equation
T = W/R
At maximum rate of leak, time is greater than (36*128)/(9*60) ~ 8.5 hours
Insufficient
E is correct
