Question

1. Chris is saving for a Xbox One. He currently has $165 saved and earns $40 per week doing chores around the house. If an Xbox costs $500 plus 10% sales tax, how long will it take for him to save that amount?

Answer 1

The Time taken by Chris to save that much amount will be 9 weeks and 4 days

Explanation:

Given as :

The present amount that Chris have = $165

The cost of Xbox = $500 + 10% sales tax

So, Total cost of Xbox = $500 + 10% of $500

Or, Total cost of Xbox = $500 + $50 = $550

Now Amount which Chris need more to buy = $550 - $165 = $ 385

As He earn $40 in a week

Let the time taken for him to save money = x

∵ To earn amount of $40 he work for 1 week

∴ To earn amount of $385 he have to wok for
`(1)/(40)` × 385 week

or, To earn amount of $385 he have to wok for =
`(385)/(40)` = 9.625 weeks = 9 weeks + 4 days

Hence, To earn amount of $385 he have to wok for 9 weeks and 4 days Answer