The basketballs Noah packed had two different prices. Of the total number of basketballs sold, 60% had a price that was $21 more than the price of the remaining basketballs. The total amount of the store’s sales for all the basketballs was $8,967. What was the price for one of the more expensive basketballs?

The cost of the more expensive basketball is required.

Price of more expensive basketball is $45.

The total number of basketballs is 245

60% of the basketballs =

40% of the basketballs =

Cost of total basketballs is $8967

Let cost of lower price basketball be

Price of more expensive basketball is

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$(8967/n + 8.4)

Step-by-step explanation:

0.4nx + 0.6n(x+21) = 8967

nx + 12.6n = 8967

x = 8967/n - 12.6

x+21 = 8967/n + 8.4

Where n is the no. of balls

Example: if total balls were 300

n = 300

More expensive one would cost:

8967/300 + 8.4 = $38.29

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

probability for j is 1/4

while

a is 1/6