The table shows the heights of Isabella, Caleb, and Jacob. The average height of three children is 144 cm. The digit in the ones place of Isabella's height and the digit in the tens place of Jacob's height are covered by ink blots.
- What is the digit in the ones place of Isabella's height?
- What is the digit in the tens place of Jacob's height?
Total height of the three children
= 3 x 144
= 432 cm
Total height of Isabella and Caleb
= 432 - 129
= 303
303 - 140 - 105
= 58
= 5 tens 8 ones
(a) Digit in the ones place of Isabella's height = 8
(b) Digit in the tens place of Jacob's height = 5
Answer(s): (a) 8; (b) 5