Three friends are starting a food truck and are contributing a total of $140,000 to begin operations. their investments are in the ratio of 3: 4: 7. what is the difference in investment between the smallest investor an largest investor?

The difference in investment between the smallest investor an largest investor is $40,000

Step-by-step explanation:

Let

x ---> the contribution of the smallest investor

y ---> the contribution of the middle investor

z ---> the contribution of the largest investor

we know that

x+y+z=140,000 > equation A

x/y=3/4 > y=(4/3)x > equation B

x/z=3/7 > z=(7/3)x > equation C

substitute equation B and equation C in equation A and solve for x

x+(4/3)x+(7/3)x=140,000

(14/3)x=140,000

x=140,000*3/14

x=$30,000

Find the value of y

y=(4/3)x > y=(4/3)(30,000)=$40,000

Find the value of z

z=(7/3)x > z=(7/3)(30,000)=$70,000

Find the difference in investment between the smallest investor an largest investor

z-x=$70,000-$30,000=$40,000

step-by-step explanation:

where is the question is there is a formula or is there not one