Question

Which of the following is approximately equal to the product of the multiplication problem below?

21/5 × 19/4

A. 40
B. 19
C. 20

Answer 1

For this case we have the following expression:

`\frac {21} {5} * \frac {19} {4}`

Multiplying we have:

`\frac {21 * 19} {5 * 4} =\\\frac {399} {20} =\\19.95`

We round the expression and we have that it is equivalent to: 20.

Thus,
`\frac {21} {5} * \frac {19} {4}`is approximately equal to 20.

Answer:

The expression given is approximately equal to 20.

Option C