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sweet [91]
3 years ago
11

They keep returning and saying show work again​

Mathematics
1 answer:
ankoles [38]3 years ago
7 0

Answer:

We conclude that:

20\times \:3\frac{1}{5}=64

Step-by-step explanation:

Given the expression

20\:\times 3\frac{1}{5}

convert mixed number to improper fraction: a\frac{b}{c}=\frac{a\times c+b}{c}

i.e. 3\frac{1}{5}=\frac{3\times 5+1}{5}=\frac{16}{5}

so the expression becomes

20\:\times 3\frac{1}{5}\:=20\times \:\frac{16}{5}

Factor the number: 20 = 5×4

              =5\times \:4\times \frac{16}{5}

Cross-cancel common factor: 5

               =4\times \:16    

Multiply the numbers: 4×16 = 64

               =64

Therefore, we conclude that:

20\times \:3\frac{1}{5}=64

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