Answer:
25 hours
Step-by-step explanation:
subtract 800 from 570 to find out how much more she needs to save
divide your answer by 9.20
hope you understand
I think you have the right answer she paid $55 dollars for each chair
Answer:
$450
Step-by-step explanation:
Let E be the amount of money Ethan starts with, J be the amount Jun Wei starts with, and R be the amount Raj starts with. Let M be the total amount of money to start with.
To start:

This means Ethan has 5/20 of M, the money to start with. This reduces to 1/4 of M.
Afterwards:

This means Ethan has 3/13 of the remaining money (which is M-50!) after giving up 50. So
E = (M/4), or 4E = M
and

We know 4E = M, so we can substitute that in:

That's how much money Ethan had to start with. But we're asked how much he has AFTER giving $50 away, so that's $450.
Answer:
0.45
Step-by-step explanation:
Step 1:

Step 2:
8 · x = 0.3 · 12
8x = 3.6
Last Step: Divide both sides by 8 to isolate the value x
Answer:
75%
Step-by-step explanation:
75% families spent $260.00 or less on electricity in August because 3 quartiles are below the point marking the $260.00 mark. Each quartile represents 25% of the data entries and if 3 quartiles are below $260.00, then 25 * 3 = 75% of the families spent $260.00 or less on electricity in August.