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at 8:00 am there were 4,000 bacteria present in the culture. At noon, the number of bacteria grew to 4,500. how many bacteria will be there by midnight?
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at 8:00 am there were 4,000 bacteria present in the culture. At noon, the number of bacteria grew to 4,500. how many bacteria will be there by midnight?

User Phillipwei
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The answer would be 6500. This is because in 4 hours the bacteria grows by 500. If you multiply 500 x 4 it would be 2000. SOOOOO 2000 + 4500 = 6500!

Hope this helps!
User Shubha
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