Step-by-step explanation:
First we have to find the cost of 10 seconds
So 9750 ÷ 30 = 325
Means 10 seconds cost 325
A cost of three 10 second ads = 325 x 3 = 975
B cost of 5 60 second ads
One 60 second ads cost = 325 x 6 = 1950
So five ads cost = 1950 x 5 = 9750
