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In 15 minutes, Jyoti can read p pages of her economics book. How many
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24 Mar 2022, 08:30
24 Mar 2022, 08:30
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In 15 minutes, Jyoti can read p pages of her economics book. How many minutes will it take her to read r pages of her marketing book, if she reads both books at the same rate?
A. r/(15p)
B. 15r/p
C. 15/(rp)
D. 15p/r
E. p/(15r)
A. r/(15p)
B. 15r/p
C. 15/(rp)
D. 15p/r
E. p/(15r)
Re: In 15 minutes, Jyoti can read p pages of her economics book. How many
[#permalink]
24 Mar 2022, 08:32
24 Mar 2022, 08:32
1
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Given: In 15 minutes, Jyoti can read p pages of her economics book.
Asked: How many minutes will it take her to read r pages of her marketing book, if she reads both books at the same rate?
Time taken to read 1 page = 15/p minutes
Time taken to read r pages = 15r/p minutes
IMO B
Posted from my mobile device
Asked: How many minutes will it take her to read r pages of her marketing book, if she reads both books at the same rate?
Time taken to read 1 page = 15/p minutes
Time taken to read r pages = 15r/p minutes
IMO B
Posted from my mobile device
Re: In 15 minutes, Jyoti can read p pages of her economics book. How many
[#permalink]
09 Apr 2022, 05:37
09 Apr 2022, 05:37
Her rate of reading is at p/15 and constant.
Thinking about the formula work=rate x time
She want to read r pages which she reads at a rate of p/15
Thus: time=(r)/(p/15) --> r*15/p
Answer B
Thinking about the formula work=rate x time
She want to read r pages which she reads at a rate of p/15
Thus: time=(r)/(p/15) --> r*15/p
Answer B
