Given the following samples: 1.2 kg, 400 g, 3 1/2 kg, 1 1/4 kg. What is the total weight?

Rationale

6.35 kg

To find the total weight of the samples, we first convert all measurements to kilograms and then sum them. The conversions yield 1.2 kg, 0.4 kg, 3.5 kg, and 1.25 kg, leading to a total of 6.35 kg.

A (6.35 kg) CORRECT

This is the correct total weight. Adding the individual weights: 1.2 kg + 0.4 kg + 3.5 kg + 1.25 kg equals 6.35 kg.

B (6.40 kg) YOUR ANSWER

This choice reflects an incorrect calculation of the total weight. The sum of the weights does not reach 6.40 kg when the individual weights are accurately added together.

C (6.45 kg) YOUR ANSWER

This option is also incorrect as the total weight does not amount to 6.45 kg. The correct addition of the weights shows that the cumulative weight is even lower than this figure.

D (6.30 kg) YOUR ANSWER

This choice underestimates the total weight. The correct calculation results in a total of 6.35 kg, which exceeds 6.30 kg by a small margin.

Conclusion

The total weight of the samples is accurately calculated as 6.35 kg by converting all measurements to the same unit and summing them. Other choices present incorrect totals due to miscalculations in adding the weights, demonstrating the importance of careful arithmetic in ensuring accurate results.

Given the following samples: 1.2 kg, 400 g, 3 1/2 kg, 1 1/4 kg. What is the total weight?

6.35 kg

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