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3.0 2. Ava is 23 cm taller than Olivia, and Olivia is half the height of Lucas. If Lucas is 1.78 m tall, how tall are Ava and Olivia? Express their heights in centimeters.

Sagot :

We need to find the height of Ava, Olivia, and Lucas. We have some information to do so.

This question is best solved if we go from end to beginning since the most important data is the last one.

Lucas is 1.78 m tall

The question requires to express the heights in centimeters, thus:

Lucas is 178 cm tall

We also know Olivia is half the height of Lucas. Thus the height of Olivia is 178 cm / 2 = 89 cm

Olivia is 89 cm tall.

Finally, we know Ava is 23 cm taller than Olivia. Thus Ava's height is 89 + 23 = 112 cm

Ava is 112 centimeters tall