Preston and justis have a video game collection.

the number of video games in preston’s collection can be represented by x.
the number of video games in justis’s collection is 3 times the number in preston’s collection
the total number of video games in both collections is 128.
write an equation that you would use to find the total number of video games preston has in his collection. solve the equation. show all the steps you used to solve it. will. mark.

Step-by-step explanation:  Justis has three times the amount of Preston. Three is one of the key words here. Represent Prestons amount by x. Since Justis has three times the amount you would do X times 3 to find out how much Justis has. First we need to see how much Preston has. The total number of them combined is 128. Lets write the equation

3x + x = 128

The two x's are important because your multiplying to see how much Justis has AND adding to get 128

The equation simplified is 4x = 128

divide 128 by 4 and you get 32

The answer is that Preston has 32 and Justis has 96 video games. Hope this helps! :)

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !

question: use the following table of a school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km

answer: 42 km/h

explanation: 1.4/0.033 42.42424 = 42 km/h

question answered by

(jacemorris04)