The table shows the heights of Isaac, Chloe, and Christian. The average height of three children is 136 cm. The digit in the ones place of Isaac's height and the digit in the tens place of Christian's height are covered by ink blots.
- What is the digit in the ones place of Isaac's height?
- What is the digit in the tens place of Christian's height?
Total height of the three children
= 3 x 136
= 408 cm
Total height of Isaac and Chloe
= 408 - 146
= 262
262 - 130 - 106
= 26
= 2 tens 6 ones
(a) Digit in the ones place of Isaac's height = 6
(b) Digit in the tens place of Christian's height = 2
Answer(s): (a) 6; (b) 2