Question

The ages of ten students of a group are given below. The ages have been recorded in years and months:
$8-6,9-0,8-0,4,9-3,7-8,8-11,8-7,9-2,7-10,8-8$
(i) What is the lowest age?
(ii) What is the highest age?
(iii) Determine the range?

Answer 1

After arranging in ascending order, the ages of the students are $7$ years $8$ months, $7$ years $10$ months, $8$ years $4$ months, $8$ years $6$ months, $8$ years $7$ months, $8$ years $8$ months, $8$ years $11$ months, $9$ years, $9$ years $2$ months, and $9$ years $3$ months.

(i) The lowest age is 7 years 8 months.

(ii) The highest age is 9 years 3 months.

(iii) The range of the ages is
$=$Maximum value$-$Minimum value
$=9$ years $3$ months $-7$years $8$ months
$=8$ years $15$ months -$7$years $8$ months
$=1$ year $7$ months