Working together, the job takes x hours to do.
If a lawn can be mowed with a push mower is 2 hours, then in 1 hour, you do 1/2 of the job.
If the same lawn can be mowed with a riding mower in 1 hour, then in 1 hour you do 1 job.
If the same lawn can be mowed by the two mowers together in x hours, then in 1 hour you get 1/x done.
1/2 + 1 = 1/x
3/2 = 1/x
x = 2/3
They take 2/3 of an hour. 2/3 * 60 min = 40 minutes.
Answer:
:)
Step-by-step explanation:
Tysm
There are 5 even numbers and 7 numbers total. So it would be 5/7 because that's how many even numbers there are out of those 7 numbers.
Answer:
37.5% probability of the spinner landing on the number that's greater than five
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question:
There are 8 total sections, from 1 to 8.
3 of those sections, 6, 7 and 8, are numbers that are greater than five.
3/8 = 0.375
37.5% probability of the spinner landing on the number that's greater than five
