The table shows the heights of Charlotte, John, and Scarlett. The average height of three children is 132 cm. The digit in the ones place of Charlotte's height and the digit in the tens place of Scarlett's height are covered by ink blots.
- What is the digit in the ones place of Charlotte's height?
- What is the digit in the tens place of Scarlett's height?
Total height of the three children
= 3 x 132
= 396 cm
Total height of Charlotte and John
= 396 - 132
= 264
264 - 140 - 100
= 24
= 2 tens 4 ones
(a) Digit in the ones place of Charlotte's height = 4
(b) Digit in the tens place of Scarlett's height = 2
Answer(s): (a) 4; (b) 2