Answer:
Chris can mow 8 yards in 20 hours.
Step-by-step explanation:
Chris can mow 2 yards in 5 hours. That means the ratio between his amount of yards and the time it takes to mow them is 2:5. In order to figure out how long it takes him to mow 8 yards we need to find the unit rate. In this situation, the unit rate would represent how long it takes Chris to mow 1 yard. In order to find the unit rate we need to divide. 2/2 is 1 which is the number we're trying to get to. According to distributive property, what you do to one side you also have to do to the other. That menas we divide 5 by 1 as well. That gives us 2.5. This means that in 2.5 hours Chris can mow 1 yard. We can check our work by doing the opposite of division, multiplication. 1 x 2 = 2. 2.5 x 2 = 5. Everything adds up. Now that we hav our unit rate we do the same thing except with 8 instead of 5 hours. Just plug the numbers in, it's easy and fun when you understand the formula. 1 x 8 = 8. 2.5 x 8 = 20. Chris can mow 8 yards in 20 hours. To check our work we do the oppistite. Divide instead of multiply. 20/ 8 =2.5. 8/8 = 1. It adds up correctly. Hope this helps! :)
