Choose a strategy or a combination of strategies to solve the problem. Alicia forwards an e-mail to 2 of her friends. After 10 minutes, each of those 2 friends forwards the message to 2 more friends. If the message is forwarded like this every 10 minutes, how many people will have received Alicia's e-mail after 40 minutes?

Question

Mathematics

Giancarlo Vaughan

20 September, 16:41

Choose a strategy or a combination of strategies to solve the problem. Alicia forwards an e-mail to 2 of her friends. After 10 minutes, each of those 2 friends forwards the message to 2 more friends. If the message is forwarded like this every 10 minutes, how many people will have received Alicia's e-mail after 40 minutes?

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Answers (1)

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Jamar Hamilton · Answer 1

62 people after 40 minutes.

Multiply the previous number by 2 and add that to the total of recipients

0 minutes = 2. 10 minutes (2+4) = 6. 20 minutes (2+4+8) = 14. 30 minutes (2+4+8+16) = 30. 40 Minutes (2+4+8+16+32) = 62