Justin bought a calculator and a binder that were both 15% off the original price. The original price of the binder was $6.20. Justin spent a total of $107.27. What was the original price of the calculator?

9514 1404 393

  $120

Step-by-step explanation:

Let c represent the original price of the calculator. Then the amount Justin spent was ...

  (6.20 +c)(1 -0.15) = 107.27

  6.20 +c = 107.27/0.85 . . . . . divide by the multiplier on the left

  c = 126.20 -6.20 . . . . . . . . . . subtract 6.20

  c = 120

The original price of the calculator was $120.

 $120  

Step-by-step explanation:

hey

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~