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The annual exports of the company NeuStar increased by 25% last year.

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Bunuel
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The annual exports of the company NeuStar increased by 25% last year. [#permalink] New post   24 Jul 2019, 04:01
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The annual exports of the company NeuStar increased by 25% last year. This year, it increased by 20%. If the increase in the exports was 1 million dollars last year, then what is the increase (in million dollars) this year?

(A) 0.75
(B) 0.8
(C) 1
(D) 1.2
(E) 1.25
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C
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Re: The annual exports of the company NeuStar increased by 25% last year. [#permalink] New post   24 Jul 2019, 04:15
Bunuel wrote:
The annual exports of the company NeuStar increased by 25% last year. This year, it increased by 20%. If the increase in the exports was 1 million dollars last year, then what is the increase (in million dollars) this year?

(A) 0.75
(B) 0.8
(C) 1
(D) 1.2
(E) 1.25


Given: The annual exports of the company NeuStar increased by 25% last year. This year, it increased by 20%. The increase in the exports was 1 million dollars last year.
Asked: What is the increase (in million dollars) this year?

25% of x = 1 million
x = 4 million
x + 25%x = 5 million

The increase (in million dollars) this year= 20% of 5 million = 1 million

IMO C
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Jihyo
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The annual exports of the company NeuStar increased by 25% last year. [#permalink] New post   Updated on: 23 Apr 2021, 06:48
let's say the initial exports=100
after first increase last year=125
after 2nd increase this year=125*(120/100)=150
Increase in last year=125-100=25....or....1 million
Increase in this year=150-125=25....or....1 million

answer:C

Hello Bunuel is this approach alright?

Originally posted by Jihyo on 22 Apr 2021, 16:10.
Last edited by Jihyo on 23 Apr 2021, 06:48, edited 1 time in total.
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The annual exports of the company NeuStar increased by 25% last year. [#permalink] New post   23 Apr 2021, 00:01
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Solution:

Given 25% of 100 units = 1mn $

=> 100 units(or total exports last year) = 1/25 = 4 mn$

For the next year the increase is on 4+1 = 5 mn$(New total export)

20% of 5 mn$ = 1mn$ (option c)

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The annual exports of the company NeuStar increased by 25% last year. [#permalink]
23 Apr 2021, 00:01
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