Download presentation

Presentation is loading. Please wait.

1
7.4B HW Answers

2
**2. Jose has $2. 45 in nickels and dimes**

2. Jose has $2.45 in nickels and dimes. He has ten more nickels than dimes. How many of each does he have? 0.05n d = 2.45 5n + 10d = 245 25 n = d + 10 = = 5(d + 10) + 10d = 245 5d d = 245 15d + 50 = 245 d = 13 15d = 195

3
**+ (–10) 0.10d + 0.25q = 9.65 d + q = 59 -10d–10q = -590 15q = 375**

3. A jar filled with only dimes and quarters contains a total of 59 coins. The value of all the coins in the jar is $ How many quarters are in the jar? 0.10d q = 9.65 10d + 25q = 965 + (–10) d + q = 59 -10d–10q = -590 15q = 375 q = 25

4
**4. Ernie has $3. 65 in nickels and dimes**

4. Ernie has $3.65 in nickels and dimes. He has 13 more nickels than dimes. How many of each coin does he have? 0.05n d = 3.65 5n + 10d = 365 33 n = d + 13 = = 5(d + 13) + 10d = 365 5d d = 365 15d + 65 = 365 d = 20 15d = 300

5
**+ (–5) 0.05n + 0.25q = 9.65 5n + 25q = 965 n + q = 65 -5n – 5q = -325**

5. A jar filled with only nickels and quarters contains a total of 65 coins. The value of all the coins in the jar is $ How many quarters are in the jar? 0.05n q = 9.65 5n + 25q = 965 + (–5) n + q = 65 -5n – 5q = -325 20q = 640 q = 32

6
**6. Tickets to a local movie were sold at $6. 00 for adults and $4**

6. Tickets to a local movie were sold at $6.00 for adults and $4.50 for students. If 210 tickets were sold for a total of $1,065, how many student tickets were sold? 6a s = 1065 600a + 450s = + (–600) a + s = 210 -600a–600s = -150s = s = 130

7
**+ 25a + 15c = 8415 25a + 15c = 8415 (–25) a + c = 441 -10c = -2610**

7. Tickets to a play were sold for $25 for adults and $15 for children. If 441 tickets were sold for a total of $8415, how many children tickets were sold? 25a + 15c = 8415 25a + 15c = 8415 + (–25) a + c = 441 -25a –25c = -10c = -2610 c = 261

8
8. The Steele Canyon ASB sold advance tickets to the dance for $4 per ticket. Anyone who attended and purchased their ticket at the door had to pay $5 a ticket. A total of 480 students attended the dance and ASB earned $ How many students bought tickets at the door? 4a + 5d = 2100 4a + 5d = 2100 + (–4) a + d = 480 -4a – 4d = -1920 d = 180

9
**+ 3a + 1s = 470 3a + s = 470 (–1) a + s = 292 -a – s = -292 2a = 178**

9. Altogether 292 tickets were sold for a high school basketball game. An adult ticket costs $3 and a student ticket costs $1. Ticket sales were $470. How many of each type of ticket were sold? 3a + 1s = 470 3a + s = 470 + (–1) a + s = 292 -a – s = -292 2a = 178 89 + s = 292 a = 89 s = 203

Similar presentations

Presentation is loading. Please wait....

OK

Making Landmark or Friendly Numbers (Multiplication)

Making Landmark or Friendly Numbers (Multiplication)

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google