madelynmorgan8004 madelynmorgan8004
  • 03-01-2021
  • Mathematics
contestada

The price of a smart phone is "x" and is discounted 40% for a special promotion. You must also pay 7% sales tax on this purchase. What is the final price for this purchase?

Respuesta :

adefunkeadewole adefunkeadewole
  • 04-01-2021

Answer:

0.428x

Step-by-step explanation:

The price of a smart phone is "x" and is discounted 40% for a special promotion.

Step 1

The price after the discount is:

40% of x

= 40x/100

= 0.4x

Step 2

We calculate the exact amount the sales tax is.

You must also pay 7% sales tax on this purchase.

= 7% × 0.4x

= 7/100 × 0.4x

= 0.028x

Step 3

The final price for this purchase is calculated as:

0.4x + 0.028x

= 0.428x

Hence, the final price for this purchase is 0.428x

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