Question

according to this triple - beam balance the correct measurement is a. 137.4g b. 30.7g c. 37.3g d. 37.0g

Explanation:

Step1: Read the large - weight beam

The large - weight beam shows 30 g.

Step2: Read the medium - weight beam

The medium - weight beam shows 7 g.

Step3: Read the small - weight beam

The small - weight beam shows 0.3 g.

Step4: Calculate the total mass

Add the values from the three beams: $30 + 7+0.3=37.3$ g.

Answer:

C. 37.3g