Answer:
hope it helps :D
Let us assume the time after which both singers will charge the smae amount of money = x
Then
50 + 20x = 100 + 10x
20x -10x = 100 - 50
10x = 50
x = 50/10
= 5
So after 5 hours both Singer A and Singer B will charge the same amount of money. I hope the procedure is clear to you and you can attempt such problems in future without needing any kind of help.
Step-by-step explanation:
Lets make a proportion with the information we know. For every 1000, 8 of tax is paid.
8/1000
Then, use the rest of the information to make another proportion. We don’t know how much the tax is, so let’s call it x.
x/150000
Set the equations equal to each other
8/1000=x/150000
Cross multiply
1000x=1200000
Divide by 1000 on both sides
x=1200
9x² + 7y² = 42
7y² = 42 - <span>9x²
</span>
y² = (42 - <span>9x²)/7</span>
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Answer: -180
Hope this helped!
