Question

Harper Hospital treated 423 patients last week who were children, out of a total of 931 patients. The administrator calculates that they had 408 adult patients. Is the administrator's calculation reasonable? Estimate the number of adult patients by rounding the numbers to check the administrator's calculation.

Answer 1

No, the administrator is wrong.

`Adult = 500`

Explanation:

Given

`Total = 931`

`Children = 423`

`Adult = 408`

Solving (a): Is the administrator correct?

No, the administrator is wrong.

This is so because: when the number of children is subtracted from the total patient, the remaining number is not 408

Solving (b): Estimate the number of adults

By rounding up:

`Adult = Total - Children`

Actual Figures

`Adult = 931 - 423`

Round up

`Adult = 900 - 400`

`Adult = 500` -- approximately