the distance traveled is proportional to the time it takes to travel. It takes 13 seconds to travel 143 m. How long would it take to travel 440 m?
40 seconds
x/19 = 12/20
11.4
A circle's radius is proportional to its circumference. A circle with a radius of 3 has a circumference of 18.8. What is the circumference of a circle with radius 9?
56.5
A family's monthly phone bill is proportional to how many people in the family have phones. A family with 6 cell phones pays $240 for their phone bill. How much would a family with 2 cell phones pay?
$80
Mr. Holloway is a craftsman who makes custom guitars by hand. His last order was for 2 guitars, and it took him 8 weeks to make them. He receives an order to make 7 guitars.
If he makes the guitars at the same rate, how long will it take Mr. Holloway to make the guitars?
28 Weeks