Question

A radio-controlled helicopter sells for $20, but needs a lithium battery that costs 25% of that price. A sales tax of 6% will be added to the cost of both items. What is the total cost of the helicopter, battery and tax? Complete the explanation.​

Answer 1

$26.50

Explanation:

Helicopter is $20.

The battery is 25% of 20.

25% of 20

= .25 • 20

= 5

The battery will be $5.

The total purchase will be 20 + 5, that is,

$25

Calculating the tax:

6% of $25

= .06 • 25

= 1.5

Add the tax onto the total.



$25 + $1.50

= 26.50

The helicopter, battery and tax all adds up to $26.50