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Roy is now 4 years older than Erik and half of that amount
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14 Feb 2010, 01:56
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75% (02:43) correct 25% (03:09) wrong based on 399 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? (a) 8 (b) 28 (c) 48 (d) 50 (e) 52
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Re: Plzz! explain the answer
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14 Feb 2010, 15:03
AtifS wrote: 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 \(I=4\) > \((R+2)(I+2)=48\) Answer: C.
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Re: Roy is now 4 years older than Erik and half of that amount
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11 Aug 2014, 03:18
Roy .............. Erik ............ Iris x+4 ................ x .................. x+2 .................. Current Ages (Roy 4 yrs older than Erik & 2 yrs older than Iris) Ages after 2 yrs x+6 ................ x+2 .................. x+4 x+6 = 2(x+2) ........ Roy is twice the age of Erik x = 2 Roy * Iris = 8 * 6 = 48 Answer = C
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Re: Plzz! explain the answer
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14 Feb 2010, 02:28
r=e+4  1st 4=i+2 .. 2nd
in 2 years r+ 2 = 2 * (I+2) .. 3rd
solving 1st and 3rd equation we get r=6, i = 2, and using 2nd equation we get i=4
so in 2 years r=8 and i=6, product =48
C



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Re: Plzz! explain the answer
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14 Feb 2010, 11:40
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.
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Re: Plzz! explain the answer
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15 Feb 2010, 07:20
Bunuel wrote: AtifS wrote: 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)
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Re: Roy is now 4 years older than Erik and half of that amount
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20 Aug 2014, 13:16
I did this with backsolving and fortunately struck gold in the first attempt itself, i.e. testing with C.



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Re: Roy is now 4 years older than Erik and half of that amount
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23 Nov 2015, 02:55
AtifS wrote: 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 13353 times ]
E + 6 = 2E + 4 E = 2 Therefore, (Roy's age)* (Iris's age) = 8*6 = 48 Option C



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Re: Roy is now 4 years older than Erik and half of that amount
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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'



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Re: Roy is now 4 years older than Erik and half of that amount
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18 Oct 2016, 09:40
We can derive the following equations:
R=4+E > (2 years later) > R+2=2(E+2) solves to give E=2 & R=6 > (2 years down the road) > R = 8 R=2+I > I = 4 >(2 years later) > I=6
6x8 = 48



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Re: Roy is now 4 years older than Erik and half of that amount
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12 Jul 2018, 19:35
this is my method of solving . Can someone correct me in which step am i going wrong ? So the first equation is R=4+E So R is half of that amount older than I. So why cant the equation be 4+E/2 +I whats wrong in this formulation of the statement?? So in this case R +2 = 8 and I+2= 5 So the answer is 40



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Re: Roy is now 4 years older than Erik and half of that amount
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20 Dec 2018, 03:26
Translate piece by piece into numbers. R (Rehana) = Erik (E) + 4. The second equation: R = I (Iris) + 2. The third equation: R +7 = 2(E + 7). We have three equations with three variables. Rehana is 6, Iris is 4 and Erik is 2. In four years Erik would be 6 and Iris 8, the answer is 48.




Re: Roy is now 4 years older than Erik and half of that amount
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20 Dec 2018, 03:26






