Mai is riding her bicycle she take 6 hours to ride 38.4 kilometers. What is her speed ?
2 answers:
Answer: Mia's speed is 6.4 kilometers per hour.
Step-by-step explanation: Given that Mai is riding her bicycle she take 6 hours to ride 38.4 kilometers.
We are to find her speed.
We know that
According to the given information, we have
distance = 38.4 kilometers and time = 6 hours.
Therefore, the speed of Mia is given by
Thus, Mia's speed is 6.4 kilometers per hour.
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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.