Answer:
It will take them both 24 minutes to mow the lawn if they are working together.
Step-by-step explanation:
Given that Sam can mow a lawn in 40 minutes, and Melissa can mow the same lawn in 80 minutes, to determine how long does it take for both Sam and Melissa to mow the lawn if they are working together, the following calculation must be performed:
1/40 + 1/60 = 1 / X
3X + 2X = 120
X = 120/5
X = 24
Thus, it will take them both 24 minutes to mow the lawn if they are working together.
The answer is D. Every half an hour it goes up by 30, so every hour is 60
70,000,000+8,000,000+600,000+20,000+1,000+80+7 = 78,621,087
Answer:
2
Step-by-step explanation:
12x12 = 144
14x14 = 196
144 + ? = 196
196 - 144 = 52
= 2
5/6 x 12
60 / 6 = 10
It takes 10 feet of string to make 12 bracelets.
