Question

Kadin wants to buy a laptop that costs $500. He has already saved $80. He decides to save $30 each week. What is the least number of weeks he should save for to achieve his goal?

Answer 1

Answer: 14 weeks

Explanation:

Given

Kadin wants to buy a laptop of
`\$500`

He already saved
`\$80` and started saving
`\$30` each week

Suppose he saves for
`x` weeks to get the laptop i.e.

`\Rightarrow 500=80+30x\\\Rightarrow 420=30x\\\Rightarrow x=14\ \text{weeks}`

So, he need to save for 14 weeks to buy the laptop