Speed Mathematics

rani

2015-01-07 12:42:44

Karthik read 7/13 th of a book in 1st week and 5/9 th of the remaining book in 2nd week. If there were 96 pages unread after 2nd week, how many pages were there in the book ?

1) 518

2) 452

3) 468

4) 502

5) 396

1) 518

2) 452

3) 468

4) 502

5) 396

Nano

2015-11-14 00:02:27

96 pages were unread

so on second week have 5/9

So unread pages = 1 - 5/9 = 4/9

96*9/4 = 216

then, on first week unread pages were 216

total pages = 216*13/6= 468

So answer is 468

so on second week have 5/9

So unread pages = 1 - 5/9 = 4/9

96*9/4 = 216

then, on first week unread pages were 216

total pages = 216*13/6= 468

So answer is 468

Vijay Katkuri

2015-11-07 06:38:57

Given 96 left..

Lets Calculate on remaining pages for 2nd week then 1st week based on given data.

its ratio is 4/9

So..4x/9=96 this gives x=216 wich is 2nd week total.

Where as first week ratio is 6x/13=216 wich gives 468.

Lets Calculate on remaining pages for 2nd week then 1st week based on given data.

its ratio is 4/9

So..4x/9=96 this gives x=216 wich is 2nd week total.

Where as first week ratio is 6x/13=216 wich gives 468.

pratham agrawal

2015-09-22 09:54:37

the option which is a multiple of 9 and 13 will be the answer and i think this is the fastest method to solve this question

rajitha

2015-09-05 11:40:35

let total be 1

1st week- 7/13

remaining part 1-7/13= 6/13

2nd week- 5/9(6/13)= 10/39

remaining- 6/13-10/39=8/39

as given 8/39=96 =>468

1st week- 7/13

remaining part 1-7/13= 6/13

2nd week- 5/9(6/13)= 10/39

remaining- 6/13-10/39=8/39

as given 8/39=96 =>468

sai teja

2015-08-25 22:29:29

book read = 7/13 + [(5/9)*(1-(7/13))] = 31/39 th part

book unread = 1-(31/39) = 8/39 th part

given book unread=96 so

96=8/39 th partÂ

total =468

book unread = 1-(31/39) = 8/39 th part

given book unread=96 so

96=8/39 th partÂ

total =468

Neha Menon

2015-07-13 18:56:06

Ist week remaining pages 6/13 of total

2nd W.r = 4/9

Remaining pages = 96=6/13 of 4/9 of total remaining pages

Hence remaining pages = (96x13x9)/(6x4)=468

2nd W.r = 4/9

Remaining pages = 96=6/13 of 4/9 of total remaining pages

Hence remaining pages = (96x13x9)/(6x4)=468

Abinash

2015-06-01 10:41:07

Let the total book pages are X.

Then Unread page in first week was 6X/13

so after second week unread pages is 96

6X/13(4/9) = 96

x = 468

laxmi

2015-04-02 09:01:59

let 1

1-7/13=6/13

let remaining book for second week is 1

1-5/9=4/9

then 4part =96

then 9 part=216=1 means 6/13

so 6part=216

so 13 part=36*13=468

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