The table shows the heights of Zoey, Anna, and Caleb. The average height of three children is 163 cm. The digit in the ones place of Zoey's height and the digit in the tens place of Caleb's height are covered by ink blots.
- What is the digit in the ones place of Zoey's height?
- What is the digit in the tens place of Caleb's height?
Total height of the three children
= 3 x 163
= 489 cm
Total height of Zoey and Anna
= 489 - 144
= 345
345 - 160 - 106
= 79
= 7 tens 9 ones
(a) Digit in the ones place of Zoey's height = 9
(b) Digit in the tens place of Caleb's height = 7
Answer(s): (a) 9; (b) 7