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------------------------------------------------ The weight of an object on Mars varies directly as its weight on Earth. A person who weighs 165 lb on Earth weighs 66 lb on Mars. How much would a 90 lb person weigh on Mars?

The weight of an object or person on Mars is about 40% of its weight on Earth. So, a person who weighs 90lb on Earth would weigh approximately 36lb on Mars.

Explanation:

The weight of an object on Mars is directly related to its weight on Earth. This relation is due to the difference in gravitational force between Earth and Mars. In simpler terms, this means that if you weigh 100 units on Earth, you won't weigh the same 100 units on Mars.

For example, a person weighing 165lb on Earth weighs 66lb on Mars. We can say that the person's weight on Mars is 40% of the Earth's weight (since 66 is 40% of 165). So, if we have another person who weighs 90lb on Earth, we can simply calculate what 40% of 90lb is to find out their weight on Mars. Consequently, a 90lb person would weigh 36lb on Mars.

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