It's about "rates and unit rates" sorry again I also need help here sorry I'm learning something new and I need a examples
1 answer:
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72 minutes
We require their hourly rate of work
Maria cleans the house in 1 hour
Sasha cleans of the house in 1 hour
let x be the time it takes both to clean the house
+
=
multiply through by 6x
3x + 2x = 6
5x = 6 ⇒ x =
Together they can clean the house in 72 minutes