Quote:
Originally Posted by sibgakhan
Can anybody solve?
1-The cost of first 500 prints is $10, while after it, cost for each is (10-x/50). What will be X, if the total cost is $75?
2-In 2009, Ali read 10 English and 7 French books. In 2010, his ratio of English buks is 3times french buks and he read 60% of french books in 2010 then how many books he read in 2010?
3-Salma spent 1/10 of her income on clothes, 1/10 of the remaining on food, and 1/3 of the remaining on rental. if she left with Rs. 648 what is her total income?
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In 2009, Ali read English books = 10 French Books = 7
In 2010, He read English Books = x French Books = 3 x
So in 2010 the number of French Books ALi read was 3x and the total number of books was 17 + 4x. Then 60% or 3/5 = 3x/ 17+ 4x
Cross multiply we get x = 17.
Therefore, x= 17 and 3x = 3(17) = 51
So in 2010 he read 68 Books (17 English and 51 French).