Question

A mobile vendor has 22 items, some which are pencils and others are ball pens. On a

particular day, he is able to sell the pencils and ball pens. Pencils are sold for ₹15 each and

ball pens are sold at ₹20 each. If the total sale amount with the vendor is ₹380, how many

pencils did he sell?​

Answer 1

Answer:

380/20=19. He sell 19 pencils

Answer 2

Step-by-step explanation:

1st equation

x+y=22

y=22-x

2nd equation

20x+15y=380

4x+3y=76 substituting 1st equation in 2nd equation

=>4x+ 3(22-x)=76

answer is

x = 10