Jamal watched his older brother Robert lift weights. The bar alone had a mass of 20 kg. On the bar he had two 11.4 kg weights, two 4.5 weights, and four 450 g weights. What mass was Robert lifting?

- Math Help 6315
- Algebra 5831
- Math Word Problem 5611
- Calculus 2753
- Word Problem 5729
- Algebra 2 3855
- Math Problem 1202
- Algebra 1 4548
- Math Help For College 1563
- Math Equations 1010