Answer:
(45 - 12) / 4.25 = 7.76
Answer is 7 packets of sweets
Step-by-step explanation:
You have R45 and you only need to buy one cup of coffee which costs R12
After you purchased a cup of coffee you will have R33 (45 - 12 = 33)
A packet of sweets costs R4.25.
With R33 you can only buy 7 packets of sweets (33/4.25 = 7.76)