Weekly sales of your Lord of the Rings T-shirts have been falling by 5% per week. Assuming that you are now selling 50 T-shirts per week, how many shirts will you sell during the coming year?

Question

Lilah Petty

Mathematics

19 August, 15:58

Weekly sales of your Lord of the Rings T-shirts have been falling by 5% per week. Assuming that you are now selling 50 T-shirts per week, how many shirts will you sell during the coming year?

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Answers (1)

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Antonio Conley · Answer 1

47.45

Step-by-step explanation:

This is an arithmetic progression or regression there fore the formulae to use is a + (n-1) d

a = first term = 50

n = number of week = 52

d = common difference = - 0.05 or 5%

50 + (52-1) * -0.05 = 50 + (51) * -0.05

= 50 - 2.55 = 47.45

He will be selling approximately 47 lord of the Rings shirts at the beginning of the coming year