b) A single carton of juice costs $4.20.
A special offer pack of 3 cartons costs $9.45.
Ali bought a special offer pack instead of 3 single cartons.
Calculate his percentage saving.
I have managed to do this question. i ended up in an answer like 3.15/12.6 X 100...but it is very hard to calculate this withount a calculator. can anyone please explain an easy way to solve this question???
A special offer pack of 3 cartons costs $9.45.
Ali bought a special offer pack instead of 3 single cartons.
Calculate his percentage saving.
I have managed to do this question. i ended up in an answer like 3.15/12.6 X 100...but it is very hard to calculate this withount a calculator. can anyone please explain an easy way to solve this question???