# Swetha and Chaitanya went to a bookshop. Swetha purchased 5 pens, 3 note books and 9 pencils and used up all her money. Chaitanya purchased 6 pens, 6 note books and 18 pencils and paid 50% more than what Swetha paid. What % of Swethas money was spent on pens?

#### deepakveereddy Profile Answers by deepakveereddy

• Feb 24th, 2006

consider the amount spent by swetha be 'x'

5p+3n+9pe=x-----equ.1

6p+6n+18pe=1.5x----------equ.2

multiplyin equ.1 with integer 2 and subtact equ.2 from equ.1,we get

4p=0.5x

p=0.125x

%is 12.5

#### sukhdeep

• Mar 1st, 2006

%age of one pen is 12.5%

but the %age 4for 5 pens is 62.5%

hence it is the correct answer

#### chaitanya

• Mar 25th, 2006

correct ans--1/8%

!!!!!!!!!!!!!!!

#### C. Sivasankaran

• May 18th, 2006

#### saraswathy

• Jun 7th, 2006

how come the answer is 62.5?its 12.5

#### saraswathy Profile Answers by saraswathy Questions by saraswathy

• Jun 11th, 2006

sorry for the confusion.its 62.5% only.the money spent on 1 pen is 12.5%.so for 5 pens it's 62.5%

#### nurankl84 Profile Answers by nurankl84 Questions by nurankl84

• Jul 14th, 2006

consider the amount spent by swetha be 'x'line 1: 5p+3n+9pe=x-----equ.1line 2: 6p+6n+18pe=1.5x----------equ.2line 3: multiplyin equ.1 with integer 2 and subtact equ.2 from equ.1,we getline 4: 4p=0.5xline 5: p=0.125xline 6: %is 12.5line 7: for 5 pen is 62.5%Doubt in Line No:2How 1.5x comes?Can u plz explain ....Thank u in Advance...............................

#### anshi

• Jan 5th, 2012

chaityana spends 50% more= x + (x*50/100) = 3x/2 or 1.5 x