The table shows the heights of Mia, Isaiah, and Hazel. The average height of three children is 142 cm. The digit in the ones place of Mia's height and the digit in the tens place of Hazel's height are covered by ink blots.
- What is the digit in the ones place of Mia's height?
- What is the digit in the tens place of Hazel's height?
Total height of the three children
= 3 x 142
= 426 cm
Total height of Mia and Isaiah
= 426 - 121
= 305
305 - 140 - 100
= 65
= 6 tens 5 ones
(a) Digit in the ones place of Mia's height = 5
(b) Digit in the tens place of Hazel's height = 6
Answer(s): (a) 5; (b) 6