Question

Q27 A certain store sold pens for R18 each and pencils for R21 each. If a customer purchased both pens and pencils

from the store for a total of R270, what total number of pens and pencils did the customer purchase?

I 13

II 14

III 15

A) I only

B) I and II only

C) I and III only

D) I, II and III​

Answer 1

Answer:

A) I ONLY

Step-by-step explanation:

Let the number of pen be x

Let the number of pencil be y

therefore 18x + 21y = 290

if you put 1 in place of x you will get y as 12

so total number of pen and pencil are 13

and there is no integer value which may satisfy 14 and 15