76.8k views
22 votes
A shop has an offer on jumpers as shown below.

Buy 4 jumpers and get 1 free!
Kara gets 6 jumpers.
After applying the offer, each one ends up costing £8.50 per jumper.
What is the regular cost of one jumper when not in this offer?




User Smash
by
4.8k points

2 Answers

9 votes

Answer:

10.20 regular cost

Explanation:

8.50 x 6 = 51 total

51/5 = 10.20

User Aryeh Armon
by
4.5k points
2 votes

Answer:

Explanation:

1/10 + 2.5/10 = 3.5/10 of an hour to make one bracelet. Then change to 20ths so the numerator is a whole number.

Divide your time available by the time it takes to make one.

21

4 = 420= 15 bracelets

7 28

20