The following products, X, Y, Z and W have masses 0.05 { kg}, 50 { mg}, 500 { g} and 0.05 { g} respectively. Use this information to answer the question below. Which of the products have the same mass?

Correct Answer is : YYY and WWW

Correct Answer is : YYY and WWW

BECE Science 2023 Paper

Question : 26

Total: 40

X

Y

Z

W

0.05 \text{ kg}

50 \text{ mg}

500 \text{ g}

0.05 \text{ g}

Solution:

Concept:

Masses can be compared only after they are written in the same unit.

Solution:

0.05 \text{ kg} = 0.05 \times 1000 = 50 \text{ g}

50 \text{ mg} = \dfrac{50}{1000} = 0.05 \text{ g}

500 \text{ g}

0.05 \text{ g}

Y and W are both

0.05 \text{ g}

Key point: X (

0.05

kg) and W (

0.05

g) show the same number but different units; X is 1000 times heavier.

Answer:

Option A (Y and W)

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