Jerin has 40% more books than Rashed. However, if she gives 45 of her books to Rashed, then Rashed will have 10% more books than Jerin. How many books did Jerin begin with?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
2 (245)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
If Rashed has 100x books, Jerin has 140x books.
If Jerin gives 45 of her books to Rashed, then he will have 10% more books than Jerin.
According to the question,
1.1(140x-45) = 100x+45
⇒154x - 100x = 45 + 49.5
⇒x = 1.75
Jerin began with = 140 × 1.75 = 140 × 175/100 = 245.
