Question

If the cost of 4 pens and 4 pencil boxes is 100. Thrice the cost of the pen is 15 more then the cost of pencil box. Find the cost of pen and pencil box.

Answer 1

Step-by-step explanation:

let say price of the pencil box = A

and say price of the pen=B

ad per que

3×B=A+15

on simplifying we get 3B-15=A...(i)

as per que..4B+4A=100₹

put value of A here

i.e 4B+4(3B-15)=100

4B+12B-60=100

>16B=160

>>B=10 ans

put value of B in equation i we get

A=3×10-15=15 ans