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dontcareanyonemo
27.07.2021 •
Mathematics
NEED HELP
A coin collection has 33 quarters and nickels. The number of nickels is 5 greater than
three times the number of quarters. How many coins of each type are there? Write a
system of equations and solve using substitution.
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Ответ:
7 quarters
26 nickels
Step-by-step explanation:
x = number of quarters
y = number of nickels
x + y = 33
y = 3x + 5
x + 3x + 5 = 33
4x = 28
x = 7
y = 3×7 + 5 = 26
Ответ:
1. Mark's profit = $102.40
2. Jamal's profit = $156
3. Bao raised more money, making a profit of $208 than Linda's $180. The difference in the amounts the students raise was $28.
4. Flutists raised more money than Trumpeters, with the difference as $256.50
5. Band's profit from calendar sales = $4,256
Step-by-step explanation:
a) Data and Calculations:
Item Selling Price Band's Profit Band Fundraiser
CD Calendar $16 45% 100
Calendar T-Shirt $20 38% 96
T-Shirts dcal T $10 52% 40
Total 236
1. Martha's sales:
CD profit = 45% x $16 x 5 = $36.00
Calendars = 38% x $20 X 6 = $45.60
T- Shirts = 52% x $10 x 4 = $20.80
Total profits = $102.40
2. Jamal's sales:
CD profit = 45% x $16 x 6 = $43.20
Calendars = 38% x $20 X 8 = $60.80
T- Shirts = 52% x $10 x 10 = $52.00
Total profits = $156.00
3. Bao and Linda
Bao Linda
T-shirts 40
CDs 25
Price $10 $16
Total sales $400 $400
profit % 52% 45%
Profit margin $208 $180
Difference in profit = $28
4. Flutists' Goal
Goal 18% of total
Amount raised $1,710 = 18% of $9,500
Trumpeters' Goal
Goa in % = 85% of flutists' goal
= 85% of $1,710 = $1,453.50
Difference in amount raise = 15% of $1,710 = $256.50
5. Total money raise = $9,500 x 112% = $10,640
Calendar's profit = 40% of $10,640 = $4,256