Limei spent 7/10 of her money and saved the rest. She spent $42.
(a) How much money did Limei have at fist?
(b) How much money did she save?
Let's assume Limei had x amount of money at first.
Limei spent 7/10 of her money, so she spent (7/10) * x = $42.
So, x = $42 * (10/7) = $60.
Therefore, Limei had $60 at first.
To find out how much money Limei saved, we need to subtract the amount spent from the initial amount.
Amount saved = Initial amount - Amount spent
= $60 - $42
= $18.
So, Limei saved $18.
To find out how much money Limei had at first, we need to find the amount she spent initially.
Let X be the amount of money Limei had at first.
We are given that Limei spent 7/10 of her money, which is 7/10*X.
We are also told that Limei spent $42.
Setting up the equation, we have:
7/10 * X = $42
To solve for X, we can solve for X by multiplying both sides of the equation by the reciprocal of 7/10, which is 10/7:
X = $42 * (10/7)
Simplifying, we find:
X = $60
Therefore, Limei had $60 initially.
To find out how much money Limei saved, we need to subtract the amount Limei spent from her initial amount.
Let Y be the amount Limei saved.
We know that Limei spent $42, so the equation becomes:
Y = $60 - $42
Simplifying, we find:
Y = $18
Therefore, Limei saved $18.