The table shows the heights of Abigail, Isaiah, and Avery. The average height of three children is 150 cm. The digit in the ones place of Abigail's height and the digit in the tens place of Avery's height are covered by ink blots.
- What is the digit in the ones place of Abigail's height?
- What is the digit in the tens place of Avery's height?
Total height of the three children
= 3 x 150
= 450 cm
Total height of Abigail and Isaiah
= 450 - 144
= 306
306 - 160 - 109
= 37
= 3 tens 7 ones
(a) Digit in the ones place of Abigail's height = 7
(b) Digit in the tens place of Avery's height = 3
Answer(s): (a) 7; (b) 3