Question

raju gains rupees 2 on selling each pen and losses rupees 1 on selling each pencil he sell 50 pens and some pencils, losing rupees 15 in all how many pencils does she sell​

Answer 1

Answer:

15 pencils

Step-by-step explanation:

let the number of pencils sold be X

as he had sold 50 pens he would gain 100 rupees

$x + 100 = - 15 \\ x = - 15 - 100 \\ x = - 115$