Jasmine and her brother Nat are savibg to buy a digital camera that costs $135. Jasmine earns $15 per week for babysitting and spends $5 of it. Nat earns $18 per week for walking dogs and spends$7 of it. Which expression can be used to find how many weeks it will take to save for the digit camera?
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To determine how many weeks it will take for Jasmine and Nat to save enough money for the digital camera, we need to calculate their combined savings and divide it by the total amount needed.
First, let's find out how much money Jasmine saves each week. Jasmine earns $15 per week and spends $5, so her savings per week can be calculated as $15 - $5 = $10.
Next, let's determine Nat's savings per week. Nat earns $18 per week and spends $7, so his savings per week can be calculated as $18 - $7 = $11.
To find the combined savings per week for Jasmine and Nat, we can add their individual savings together: $10 + $11 = $21.
Now, we can set up an expression to calculate the number of weeks required by dividing the cost of the digital camera by their combined weekly savings.
The expression would be:
Number of weeks = Total cost of digital camera ÷ Combined weekly savings
Number of weeks = $135 ÷ $21
Simplifying this expression, we get:
Number of weeks = 6.43 or approximately 6 weeks
Therefore, it will take approximately 6 weeks for Jasmine and Nat to save enough money to buy the digital camera.