HELP PLS its advanced pre algebra grade 7
1 answer:
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Answer
Find out how much money did she start with.
To proof
let us assume that the money she had be x.
As given
woman spent two thirds of her money
Money she had after spent two thirds of her money = Total money - money spent
As given she lost two thirds the remainder
we get
Money she had after lost two thirds the remainder = Money she had after spent two thirds of her money - she lost two thirds the remainder
As given
she had $4 left
thus
x = $36
she start with $36.
Hence proved
Answer: 10 minutes
Step-by-step explanation:
Given : Three postal workers can sort a stack of mail in 20 minutes, 30 minutes, and 60 minutes, respectively.
Let T be the time taken by all of them when they working together.
Then , we have the following equation :-
Hence, the time taken by all of them when they working together = 10 minutes.