medium · GMAT Quant
An automated industrial flow meter records a cumulative fluid reading m_n liters at the start of hour n. The initial reading at hour 1 is m_1 = 210 liters, and the reading increases by a constant rate of 15 liters each hour.
What is the reading m_48 at the start of hour 48?
- 915
- 930
- 900
- 705
- 1,125
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