Bongani wants to buy a camera.He has R35,00.He saved R20,00 each week for the next y weeks.How much money does Bongani have now?

Bongani saved R20,00 each week for y weeks, so he saved a total of R20*y.

He has R35,00 saved, so he has R35 - R20*y = R35 - R20y = R35-20y.
If we assume he saved for 1 year, then y = 52 (weeks in a year),
Bongani has R35 - 20*52 = R35 - 1040 = -1005.