I have a simple math question that I'm trying to convert to a formula
OG11, problem 155 from DS:
Q:...if 3 liters of water are added to the bucket when it is half full of water, the amount of water in the bucket will increase by 1/3..
when they explain the answer they do so this way:
Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
3 + 1/2c = 4/3(1/2c)
I understand the 3 + 1/2c.
My question to you is.. how is the 4/3 part equivalent to the "increasing by 1/3" part??
Can anyone give me a simple example demonstrating their reasoning? I'm a bit confused.. I tried to set up a sample problem using the above method but wasn't able to.
Thanks!!
Fraction question from OG 11
This topic has expert replies
- aim-wsc
- Legendary Member
- Posts: 2469
- Joined: Thu Apr 20, 2006 12:09 pm
- Location: BtG Underground
- Thanked: 85 times
- Followed by:14 members
since you couldnt get OG explanation, let me use other method.maxim730 wrote:
Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
when u add 1/3 (ie 0.33) into somethin u actually multiply original value by 1.33. that means 1+1/3 = 4/3
hope this helps
Getting started @BTG?
Beginner's Guide to GMAT | Beating GMAT & beyond
Please do not PM me, (not active anymore) contact Eric.
Beginner's Guide to GMAT | Beating GMAT & beyond
Please do not PM me, (not active anymore) contact Eric.
- gabriel
- Legendary Member
- Posts: 986
- Joined: Wed Dec 20, 2006 11:07 am
- Location: India
- Thanked: 51 times
- Followed by:1 members
maxim730 wrote:I have a simple math question that I'm trying to convert to a formula
OG11, problem 155 from DS:
Q:...if 3 liters of water are added to the bucket when it is half full of water, the amount of water in the bucket will increase by 1/3..
when they explain the answer they do so this way:
Q: "when 3 liters are added, the volume of water will increase by 1/3, which is equivalent to multiplying the present value by 4/3"
3 + 1/2c = 4/3(1/2c)
I understand the 3 + 1/2c.
My question to you is.. how is the 4/3 part equivalent to the "increasing by 1/3" part??
Can anyone give me a simple example demonstrating their reasoning? I'm a bit confused.. I tried to set up a sample problem using the above method but wasn't able to.
Thanks!!
..... consider a number 100.... ur asked to increase it by 1/3rd.... the way to do it is add 100*1/3 to 100.... therefore the answer is 100+100/3.... which is equal to 100 ( 1+1/3) ... solve the bracket and u get 100*4/3... hope that helps...