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Roy is now 4 years older than Erik and half of that amount [#permalink]

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14 Feb 2010, 01:56

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71% (02:32) correct
29% (02:34) wrong based on 298 sessions

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Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age?

Hmm! would you please! explain a bit how did u get 2nd & 3rd equations? as if I take "If in 2 years, Roy will be twice as old as Erik" the n it means that r+2=2e -- 2nd

and I didn't get these words "and half of that amount older than Iris" plzz! explain it.

Any help would be highly appreciated.
_________________

"I choose to rise after every fall" Target=770 http://challengemba.blogspot.com Kudos??

Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age?

(a) 8 (b) 28 (c) 48 (d) 50 (e) 52

Hmm! would you please! explain a bit how did u get 2nd & 3rd equations? as if I take "If in 2 years, Roy will be twice as old as Erik" the n it means that r+2=2e -- 2nd

and I didn't get these words "and half of that amount older than Iris" plzz! explain it.

Any help would be highly appreciated.

Roy is now 4 years older than Erik --> \(R=E+4\) Roy is now ... half of that amount older than Iris --> \(R=I+\frac{4}{2}=I+2\) (half of the amount of 4) In 2 years, Roy will be twice as old as Erik --> \(R+2=2(E+2)\) (in 2 years for both Roy and Eric)

Then in 2 years what would be Roy’s age multiplied by Iris’s age --> \((R+2)(I+2)=?\)

Solving: \(R=6\) and \(I=4\) --> \((R+2)(I+2)=48\)

Hmm! would you please! explain a bit how did u get 2nd & 3rd equations? as if I take "If in 2 years, Roy will be twice as old as Erik" the n it means that r+2=2e -- 2nd

and I didn't get these words "and half of that amount older than Iris" plzz! explain it.

Any help would be highly appreciated.

Roy is now 4 years older than Erik --> \(R=E+4\) Roy is now ... half of that amount older than Iris --> \(R=I+\frac{4}{2}=I+2\) (half of the amount of 4) In 2 years, Roy will be twice as old as Erik --> \(R+2=2(E+2)\) (in 2 years for both Roy and Eric)

Then in 2 years what would be Roy’s age multiplied by Iris’s age --> \((R+2)(I+2)=?\)

Solving: \(R=6\) and \(I=4\) --> \((R+2)(I+2)=48\)

Thanks for explanation, Actually i couldn't get the equation with I otherwise I had solved other equations instead of this one

\(R=I+\frac{4}{2}=I+2\) (half of the amount of 4)

looks like have to work on Word Problems. thanks again and Kudos couldn't get this part (half of the amount of 4) _________________

"I choose to rise after every fall" Target=770 http://challengemba.blogspot.com Kudos??

Re: Roy is now 4 years older than Erik and half of that amount [#permalink]

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10 Aug 2014, 19:26

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Re: Roy is now 4 years older than Erik and half of that amount [#permalink]

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21 Nov 2015, 22:18

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age?

(a) 8 (b) 28 (c) 48 (d) 50 (e) 52

Since we have been given everything in terms of the of Erik, Let us assume the age of Erik to be E And, the term " half of that amount" refers to the value 4.

Attachment:

Erik age.JPG [ 13.97 KiB | Viewed 7170 times ]

E + 6 = 2E + 4 E = 2 Therefore, (Roy's age)* (Iris's age) = 8*6 = 48 Option C
_________________

Re: Roy is now 4 years older than Erik and half of that amount [#permalink]

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18 Feb 2016, 11:58

Folks

Please help me understand;

interpreted the Q stem incorrectly

Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age

'half of that amount' -- I interpreted as r= i+ 1/2(e+4)

How do i know half of that amount means - half of '4 years older'