The table shows the heights of Riordan, Levi, and Lucas. The average height of three children is 153 cm. The digit in the ones place of Riordan's height and the digit in the tens place of Lucas's height are covered by ink blots.
- What is the digit in the ones place of Riordan's height?
- What is the digit in the tens place of Lucas's height?
Total height of the three children
= 3 x 153
= 459 cm
Total height of Riordan and Levi
= 459 - 141
= 318
318 - 150 - 106
= 62
= 6 tens 2 ones
(a) Digit in the ones place of Riordan's height = 2
(b) Digit in the tens place of Lucas's height = 6
Answer(s): (a) 2; (b) 6