Question

PLEASE HELP WILL MARK BRAINLY

Answer 1

Answer:

1. What is the total price of a $50,000 house plus 7.5% sales tax?

answer

total price =$50000+7.5% of 50000=$53750

2. What is the total price of a $15,000 car plus 6.5% sales tax?

total price =$15,000+6.5% of $15,000=$15975

3.The ratio of boys to girls in the assembly was 3 to 2. If 60 boys were in the assembly,

how many girls were there?

let ratio be 3x and 2x

we have

3x=60

x=60/3=20

no of girls =2x=2×20=40

4.The ratio of dogs to cats at the vet was 4 to 3. If 210 pets were in the vet, how many cats were there?

let ratio be 4x and 3x

we have

4x+3x=210

x=210/7=30

no of cats =3x=3×30=90

Answer 2

Answer:

1: $53750

2: $15975

3: 40

4: 90

5: 51

6a: 20%

6b:204

Step-by-step explanation:

1: to calculate this mulitply 50000*1.075= 53750

2: same deal 15000*1.065=15975

3: We have a ratio of 3:2 and then 60:x because we multiplied the first ratio by 20 to get the 60 in the second we multiply the 2 by 20 as well and get x=40

4: This one is kind of tricky. we know that there are 4 dogs for every 3 cats. We also know that there are 210 animals. This means that 4x+3x=210 solve this and get x=30 you then multiply the ratio 4:3 by 30 and get 120:90

5: 1/5*255=51

5a: 1/5=.2=20%

5b: 255-51=204