Question

3. Suresh Kumar went to the market with 100 If he
buys three pens and six pencils he uses up all his
money. On the other hand if he buys three pencils
and six pens he would fall short by 20%. If he wants
to buy equal number of pens & pencils, how many
pencils can he buy?​

Answer 1

Answer:

5

Step-by-step explanation:

let

t=total money we have;

x=price per pen;

y=price for pencil;

from given data,

3x+6y=t;

6x+3y=0.8t;

By adding these equations we gets ;

9x+9y=1.8t;

for t rupees we gets,

(9/1.8)x+(9/1.8)y=t;

=> 5x+5y=t;

therefore, we can get 5 pencils.