Use proportional relationships to solve the following problem. Riley needs to earn enough money to purchase
a new computer. She currently has $200 saved and can earn $15 per hour by babysitting. Let's say she wants to save $800.
To find out how many hours she needs to work, we can set up a proportion:
$15 / 1 hour = $800 / x hours
Cross-multiplying, we get:
15x = 800
Dividing both sides by 15, we find:
x = 800 / 15
Simplifying the division, we get:
x = 53.33
Since Riley cannot work a fraction of an hour, we can round up to the nearest whole number. Therefore, she needs to work approximately 54 hours to save $800.
Sorry, it seems like you started asking a question but did not provide the complete information. Could you please provide the full problem or question so that I can assist you better?
a new bicycle. The bicycle costs $300.
Riley decides to mow lawns to earn money.
He earns $20 for mowing one lawn.
How many lawns does Riley need to mow in order to earn enough money to purchase the bicycle?
To solve this problem using proportional relationships, we can set up a proportion by comparing the money Riley earns with the number of lawns he mows.
Let's denote the number of lawns as "L," and the money Riley earns as "M."
The proportion can be set up as:
$20 / 1 lawn = $300 / L lawns
To find the number of lawns (L), we can cross-multiply and solve for L:
20 * L = 300 * 1
20L = 300
L = 300 / 20
L = 15
Therefore, Riley needs to mow 15 lawns to earn enough money to purchase the bicycle.