Roger can shovel his family's driveway in 1 hour. His older sister, Alexis, can shovel the driveway in 1/2 hour. If they work to

Question

2 years ago

9

gether, then how many minutes will it take them to shovel the driveway?

2 answers:

sukhopar [10] · Answer 1 · 2022-08-26T13:56:22+03:00

8 0

Answer:

40 min

Step-by-step explanation:

his sister can do it twice as fast so the boy does 1 and the sister does 2. he will do 1/3 of the work and it will take 1/3 of the time

eduard · Answer 2 · 2022-08-26T15:02:15+03:00

eduard2 years ago

4 0

Answer:

90 mins

Step-by-step explanation:

1 hour =60 mins

1/2 hour = 60/2=30

so, 60 +30=90