Jennifer earns $5.50 per hour
Edward earns ($5.50*1.8) $9.90 per hour
Edward earns more per hour
To find out how many hours they'd have to work to make 50$, we would just divide $50 by their hourly wage.
Jennifer=50/5.50=9.09 hours since you cant have 0.09 hours round up
Jennifer=10 hours to make at least $50 dollars
Edward=50/9.90=5.05 hours since you cant have 0.05 hours round up
Edward=6 hours to make at least $50 dollars
**Edit. Since Edward earns 1.8 times what Jennifer earns, that means he earns 180% of what she earns or 80% more. So we can tell that he earns more just by the 1.8.
1.8=180%
Let, number of spiders = x
number of insects = y
6x + 8y = 36
remember, legs can't be in fraction or decimal.
So, only (3, 2) fits with that.
So, there are 3 spiders & 2 insects in his collection.
Hope this helps!
Answer:
The total area is 45
Step-by-step explanation:
It's basically the same steps at the last problem
Answer:
- <u>120 pens and 200 pencils.</u>
<u></u>
Explanation:
You can set a system of two equations.
<u>1. Variables</u>
<u />
- x: number of pens
- y: number of pencils
<u>2. Cost</u>
- <em>each pen costs</em> $1, then x pens costs: x
- <em>each pencil costs</em> $0.5, then y pencil costs: 0.5y
- Then, the total cost is: x + 0.5y
- The cost of the whole purchase was $ 220, then the first equation is:
x + 0.5y = 220 ↔ equation (1)
<u>3. </u><em><u>There were 80 more pencils than pens</u></em>
Then:
pencils = 80 + pens
↓ ↓
y = 80 + x ↔ equation (2)
<u>4. Solve the system</u>
i) Substitute the equation (2) into the equation (1):
ii) Solve
iii) Substitute x = 120 into the equation (2)
Solution: 120 pens and 200 pencils ← answer
