The table shows the heights of Gabriel, Harris, and Liam. The average height of three children is 157 cm. The digit in the ones place of Gabriel's height and the digit in the tens place of Liam's height are covered by ink blots.
- What is the digit in the ones place of Gabriel's height?
- What is the digit in the tens place of Liam's height?
Total height of the three children
= 3 x 157
= 471 cm
Total height of Gabriel and Harris
= 471 - 140
= 331
331 - 170 - 105
= 56
= 5 tens 6 ones
(a) Digit in the ones place of Gabriel's height = 6
(b) Digit in the tens place of Liam's height = 5
Answer(s): (a) 6; (b) 5