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Mary’s annual income is $15,000 and John’s annual income is [#permalink]
04 Mar 2013, 06:50

5

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

61% (02:47) correct
39% (01:38) wrong based on 211 sessions

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
04 Mar 2013, 07:02

1

This post received KUDOS

megafan wrote:

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Let Mary's income increase by x, then the equation will be 15,000 + x= (55/100)* (15,000 + x + 18000 ) 15,000 + x = (11/20) * (33,000 + x) 300,000 + 20x = 11x + 363,000 9 x = 63,000 x = 7,000 So, Answer will be C

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
04 Mar 2013, 11:09

3

This post received KUDOS

Expert's post

2

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megafan wrote:

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Try the middle number: if Mary's annual income increase by $7,000, her income will be $22,000 and combined income will be 22,000 + 18,000 = $40,000. 55% of $40,000 is exactly $22,000.

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
07 Jul 2013, 18:06

1

This post received KUDOS

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Let X be the combined income. Since only Mary's income is increasing then John's income 18000 must constitute 45% of the total income , thus 18000 = 45% of X X = 18000*100/45 X= 40000

Thus increase in Mary's income is 40000 - (18000+15000) = 7000.

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
04 Feb 2014, 13:23

megafan wrote:

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Should they mention to constitute 55% of Mary and John combined income after the increase? Cause for me it is not 100% clear. What do you guys think about the language?

Mary's annual income is $15000 and John's annual income is $18000. [#permalink]
26 Mar 2015, 03:49

Mary's annual income is $15000 and John's annual income is $18000. By how much Mary's annual income increase so that it constitutes 55% of Mary and John's combined income?

a. $3000 b. $4000 c. $7000 d. $8000 e. $9000

I am not sure where I am making the mistake. M= 15000 and J= 18000. Together M+J= 33,000. So J's income should increase to 55% of the combined which is 18,150. 18,150-15000 = 3150

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
26 Mar 2015, 03:52

Expert's post

Turkish wrote:

Mary's annual income is $15000 and John's annual income is $18000. By how much Mary's annual income increase so that it constitutes 55% of Mary and John's combined income?

a. $3000 b. $4000 c. $7000 d. $8000 e. $9000

I am not sure where I am making the mistake. M= 15000 and J= 18000. Together M+J= 33,000. So J's income should increase to 55% of the combined which is 18,150. 18,150-15000 = 3150

Merging topics. Refer to the discussion above.

Please search before posting. Thank you. _________________

Re: Mary’s annual income is $15,000 and John’s annual income is [#permalink]
26 Mar 2015, 04:36

megafan wrote:

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Current ratio is \(\frac{15000}{33000} = \frac{15}{33}\) what should be added to denominator and numerator to make it \(\frac{55}{100}\) or \(\frac{11}{20}\) or \(\frac{22}{40}\) .

Adding 7 will make \(\frac{15+7}{33+7}\) = \(\frac{22}{40}\)

Answer 7000.

C _________________

Thanks, Lucky

_______________________________________________________ Kindly press the to appreciate my post !!

gmatclubot

Re: Mary’s annual income is $15,000 and John’s annual income is
[#permalink]
26 Mar 2015, 04:36

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