Question

A student bought some pens at 8 rupees each and some pencils at 1.50 each of the total number of pens and pencils purchased is 16 and their total cost is 50 rupees how many pens did he buy?

Answer 1

Answer:

Step-by-step explanation:

Hey, check this

Let the number of pens = x

& number of pencils = y

x+y =16 ________(1)

8x + 1.5y = 50 __________(2)

Now, solve the above equations

Multiply eq (1) both by 8

8x +8y = 128

8x + 1.5y = 50

___________

- - -

6.5y = 78

→ y= 12

& put the value of y in eq (1)

x + y = 16

→ x = 4