Respuesta :

montecarlo2463
first you set up a proportion:

7% = 7 / 100

7 x
----- = --------
100 45.50

then cross multiply:

100x = 7 ( 45.50 )

multiply:

100x = 318.5

then divide:

100x 318.5
------- = -------
100 100

x = 3.185

then add x to original price:

45.50 + 3.185 = 48.685

round to hundredths:

48.69 is your answer

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