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Elmer has a collection of 300 fossils. Of these, 
21% are fossilized snail shells. How many fossilized snail shells does Elmer have?

Elmer has a collection of 300300 fossils. Of these, 21% 21 \% are fossilized snail shells. How many fossilized snail shells does Elmer have?

Full solution

Q. Elmer has a collection of 300300 fossils. Of these, 21% 21 \% are fossilized snail shells. How many fossilized snail shells does Elmer have?
  1. Convert to decimal: Convert the percentage of fossilized snail shells to a decimal.\newline21%21\% as a decimal is calculated by dividing 2121 by 100100.\newline21%=21100=0.2121\% = \frac{21}{100} = 0.21
  2. Calculate number of shells: Calculate the number of fossilized snail shells.\newlineWe know:\newline• Total number of fossils: 300300\newline• Percentage of fossilized snail shells as a decimal: 0.210.21\newlineTo find the number of fossilized snail shells, multiply the total number of fossils by the decimal percentage.\newlineNumber of fossilized snail shells = 0.21×3000.21 \times 300
  3. Perform multiplication: Perform the multiplication to find the number of fossilized snail shells.\newline0.21×300=630.21 \times 300 = 63\newlineSo, Elmer has 6363 fossilized snail shells in his collection.