When you add the Roman numeral XXX to XL, what Roman numeral do we get?

XXXC

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XXL

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LXX

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LLX

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Solution

The correct option is C LXX
We know that X = 10 and L = 50.

When a Roman numeral with the larger value is on the left, we add the values together and when it is on the right, we subtract the values.

Thus, XXX = 10 + 10 + 10 = 30 and XL = 50 - 10 = 40.

Therefore, XXX + XL = 30 + 40 = 70.

But, 70 = 50 + 10 + 10 = LXX.

Thus, we get LXX when XXX is added to XL.

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