It takes hank 40 minutes (2/3 hours) to mow a lawn. penny can mow the same size lawn in 30 minutes (1/2 hour). hank and penny form a small lawn care company and have contracts for 7 lawns of the same size previously mentioned. how long should it take both of them working together to mow the 7 lawns? (hint: find a combined hourly rate of ""lawns per hour"" for hank and penny

2 hours

Step-by-step explanation:

Given: It takes Hank minutes hours to mow a lawn. Penny can mow the same size lawn in minutes hours. Hank and Penny form a small lawn care company and have contracts for lawns of the same size previously mentioned.

To Find: How long should it take both of them working together to mow the   lawns.

Solution:

Time taken by Hank to mow the lawn

Time taken by Penny to mow the lawn

Total lawns to be mowed

Let time taken by Hank and Penny to mow one lawn

time taken to mow lawns

Hence it will take  by Hank and Penny to mow lawns

the answe i =−n+5