I can buy 9 footballs for R150 each, but get a 20% discount if I buy ten. How much can I save if I buy 10 footballs instead of 9.

R150
R20
R170
R100

To find out how much you can save if you buy 10 footballs instead of 9, first calculate the total cost of buying 9 footballs: 9 footballs * R150/football = R<<9*150=1350>>1350

Next, calculate the discount amount: R1350 * 20% = R<<1350*20*.01=270>>270
Finally, subtract the discount amount from the total cost of buying 9 footballs to find the savings: R1350 - R270 = R<<1350-270=1080>>1080

Therefore, you can save R1080 if you buy 10 footballs instead of 9.