Question

171 is 0.9% of what number? Use pencil and paper. Would you expect the answer to be a lot less than 171, slightly less than 171, slightly greater than 171, or a lot greater than 171? Explain. 171 is 0.9% of?

Answer 1

171 is 0.9% of 19000

Step-by-step explanation:

let the unknown number be = y

0.9% * y = 171

0.9% = 0.009

0.009 × y = 171

0.009y = 171

DIvide both sides by 0.009:

0.009y/0.009 = 171/0.009

y = 19,000

Hence, 171 is 0.9% of 19000

We would expect the answer to be a lot greater than 171 because the percentage is quite small (less than 1%). Divindg a number by a very small decimal makes the result large.

Hence, the number would be large.