Question

You wish to buy a new set of strings for your guitar. You phone five different

Answer 1

Answer:

215,00.

Step-by-step explanation:

Average price = 22500

18000*2 + 28000 + 27000 + x = 22500*5

91000 + x = 112500

X = 21500

Answer 2

Answer:

R215,00

Step-by-step explanation:

Let x = amount the 5th music shop charges for the strings

$\sf mean=\dfrac{\textsf{sum of all the numbers}}{\textsf{amount of numbers}}$

$\implies \sf 225=\dfrac{180+180+280+270+x}{5}$

$\implies \sf 225\cdot 5=910+x$

$\implies \sf 1125=910+x$

$\implies \sf x=1125-910$

$\implies \sf x=215$

Therefore, the fifth music shop charged R215,00 for the strings.