Mikaela earns $10 an hour  tutoring. For the first month, she tutored for 35 hours and in the second month, she tutored 5 hours more than the first month. She spent 4/5 of her total earnings on her personal needs and saved the rest of the money. How much did she save?
Mikaela spent 35 + 5 = 
<gadget id="calculator">35+5</gadget>
<output>40</output>
40 hours in the second month.
So, she tutored a total of 35 + 40 = 
<gadget id="calculator">35+40</gadget>
<output>75</output>
75 hours for the first two months.
Thus, her total earning was 75 x $10 = $
<gadget id="calculator">75*10</gadget>
<output>750</output>
750.
And, her total expenses was 4/5 x $750 = $
<gadget id="calculator">4/5*750</gadget>
<output>600</output>
600.
Therefore, she saved an amount of $750 - $600 = $
<gadget id="calculator">750-600</gadget>
<output>150</output>
150.

<result>150</result>