Answer:
4. So Adrian can buy 3 more cd's at the sale price.
5. 36 km every week.
Explanation:
Adrian has enough money to buy 3 cd's at $16 each. If the cd's are on a sale and are sold at a discount price of $12, he can buy more cd's because the price is cheaper. To find out how many more cd's he can buy, you can subtract the original cost of the cd's from the sale price of the cd's and then divide that amount by the sale price of the cd's.
3 cd's x $16 = $48
$48 - $12 = $36
$36 / $12 = 3
Rehman and his father jog to the park 3 km away from their house and back every evening except Sundays, so they jog a total of 6 km per day. To find out how many kilometres they jog per week, you need to multiply the distance they jog per day by the number of days they jog in a week (7 days - 1 Sunday).
6 km/day x 6 days/week = 36 km/week
So Rehman and his father jog 36 km every week.