Question

Physics tells us that weights of an object on the moon is proportional to its weight on Earth.
Suppose a 90 kg man weighs 15 kg on the moon what will a 60 kg woman weigh on the
moon?
​

Answer 1

The answer is 10kg

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Answer 2

Answer:

${ \huge{ \underline{ \purple{given - - - - }}}}$

A 90kg man weights 15 kg on moon and asked what would be the weight of a 60 kg woman.

${ \huge{ \underline{ \green{variation - - - - - }}}}$

direct variation.

• if 'x' increases y will increase as well
• if y decreases x will decrease as well.

${ \huge{ \underline{ \blue{operations - - }}}}$

90kg -------15kg

60kg--------?

$\frac{60 \times 15}{90} { \small{ \red{ \textsf{cross \: multiply}}}}$

when simplified gives :10

${ \huge{ \underline{ \orange{answer \: is \: 10kg}}}}$

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