Here is financial information for each of the service types:

		Low-tech	High-tech
Total revenues		$3,000	$9,000
Total customer-specific variable costs		$1,000	$1,500
Total customer-specific fixed costs		$400	$1,000
Total allocated general fixed costs		$100	$180

Activities are measured in service hours.

The sales price per hour for low-tech is $15 per hour.

The sales price per hour for high-tech is $30 per hour.

The variable costs per hour is $5 per hour (for both low-tech and high-tech services).

Question:

1. Calculate the break-even point in hours for the firm as a whole, using the weighted average contribution margin method (i.e., composite method).