word problem for mathematics

label Mathematics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

May 20th, 2015

Let x = time it takes Billy to mow the lawn himself

Let y = time it takes Bobby to mow the lawn himself

Then,

x + y = 71

and

x = y - 30

Substitute

y - 30 + y = 71

2y = 101

y = 50.5

y = 51 minutes

May 20th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
May 20th, 2015
...
May 20th, 2015
Jun 22nd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer