Question

15. A person spent * 564 in buying pens and
pencils if cost of each pen is 7 and each
pencil is 3 and if the total number of things
bought was 108, how many of each type did he buy?​

Answer 1

Answer:

Pen=40

Pencil =68

Step-by-step explanation:

Let a=pen & b= pencil

From condition 1) = cost of pens and pencils are 564 and cont of pencil & pen respectively are 3&7

So, 7a+3b=564

From 2nd condition) =number of pen & pencil is 108

So a+b=324

After solving equation

We get a=40 & b=68