tabinmichiels tabinmichiels

10-12-2017
Mathematics

contestada

Ieda and Thanh both offer piano lessons. Ieda charges an initial fee of $8.50 and an hourly rate of $11.00. Thanh charges an initial fee of $10.00 and an hour rate of $10.50. At how many hours of instruction will the price for each instructor be the same?
2 hours
3 hours
20 hours
30 hours

Respuesta :

10-12-2017

Leda=8.50+11.00t and Thanh=10.00+10.50t.
When Leda=Thanh, 0.50t=1.5, t=1.5/0.50=3. So at 3 hours the fees ($41.50) are the same.

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kvngnewbeontop5 kvngnewbeontop5

30-11-2018

a Blood the answer is 3 hour

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