The table shows the heights of Elijah, Audrey, and Emma. The average height of three children is 166 cm. The digit in the ones place of Elijah's height and the digit in the tens place of Emma's height are covered by ink blots.
- What is the digit in the ones place of Elijah's height?
- What is the digit in the tens place of Emma's height?
Total height of the three children
= 3 x 166
= 498 cm
Total height of Elijah and Audrey
= 498 - 144
= 354
354 - 170 - 105
= 79
= 7 tens 9 ones
(a) Digit in the ones place of Elijah's height = 9
(b) Digit in the tens place of Emma's height = 7
Answer(s): (a) 9; (b) 7