Please help me solve this problem....I keep getting a different answer form my teacher....could she be wrong?:) Here is the problem: Jonathan and Morgan are two of Santa's elves. Jonathan can make a toy in eleven hours. Morgan can make the same toy in nine hours. How long it take for both Jonathan and Morgan to make the toy if they were working together?

Thanks for helping,
Karen



Hi Karen,

Jonathan can make a toy in eleven hours.

So in 99 hours Jonathan can make 9 similar toys

Morgan can make the same toy in nine hours.

so in 99 hours Morgan can make 11 similar toys

How long it take for both Jonathan and Morgan to make the toy if they were working together?

Well altogether they could make 20 toys in 99 hours. How long is that for one toy?

Claude
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