Question

an electronics store makes a profit of $72 for every standard cd player sold and $90 for every portable cd player sold. the manager’s target is to make at least $360 a day on sales from standard and portable cd players. write an inequality that represents the numbers of both kinds of cd players that can be sold to reach or exceed the sales target. let s represent the number of standard cd players and p represent the number of portable cd players. a. 72s 90p ≥ 360 b. 90s 72p ≤ 360 c. 72s 90p ≤ 360 d. 90s 72p ≥ 360

Answer 1

72s + 90p > = 360 (thats greater then or equal)

Answer 2

The required inequality will be :

`72\cdot s + 90\cdot p\geq 360`

Explanation:

Let number of standard cd player sold be s

and number of portable cd player sold be p

Profit earned by the shopkeeper on each standard cd player = $72

Profit earned by the shopkeeper on each portable cd player = $90

Total profit earned by the shopkeeper = 72s + 90p

and it is said the shopkeeper has to make profit of atleast $360

Hence, the required inequality will be :

`72\cdot s + 90\cdot p\geq 360`