Question

what is the mass shown?
102.9 g
19.0 g
120.9 g
129.0 g

Explanation:

Step1: Analyze the large - value scale

The top - most scale shows values in increments of 10. The reading on this scale is 20 g.

Step2: Analyze the middle - value scale

The middle scale shows values in increments of 100. The reading on this scale is 100 g.

Step3: Analyze the small - value scale

The bottom scale has markings from 0 to 2 with smaller sub - divisions. Each small sub - division represents 0.1 g. The reading on this scale is 0.9 g.

Step4: Calculate the total mass

Add the values from the three scales: \(100 + 20+0.9=120.9\) g

Answer:

120.9 g