Question

I bought 5 pens, 7 pencils and 4 erasers Rajan bought 6 pens, 8 erasers and 14 pencils for an amount which was half more what I had paid What percent of the total amount paid by me was paid for the pens?

• A. 37.5%
• B. 62.5%
• C. 50%
• D. None of these

Answer 1

Answer: (B)

62.5%

Let, 5 pens + 7 pencils + 4 erasers = x rupees
so 10 pens + 14 pencils + 8 erasers = $2\times xrupees$
According to the question
6 pens + 14 pencils + 8 erarsers =$1.5\times xrupees$
so $(10-6)=4pens=(2-1.5)xrupees$
so$4pens=0.5xrupees\Rightarrow 8pens=xrupees$
so $5pens=5x/8rupees$
i.e $5/8=\frac{500}{8}=62.5$% is the answer