medium · GMAT Quant
A business mobile plan charges base fees of $30 per month for Line Alpha and $50 per month for Line Beta (totaling $80 base charge). Line Alpha incurs overage fees at $0.05 per gigabyte and Line Beta at $0.02 per gigabyte. Last month, combined overage across both lines was 800 gigabytes and the total monthly bill was $106.50.
How many gigabytes of overage were used on Line Alpha?
- 350
- 450
- 400
- 500
- 300
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