The table shows the heights of Liam, Lily, and Anthony. The average height of three children is 126 cm. The digit in the ones place of Liam's height and the digit in the tens place of Anthony's height are covered by ink blots.
- What is the digit in the ones place of Liam's height?
- What is the digit in the tens place of Anthony's height?
Total height of the three children
= 3 x 126
= 378 cm
Total height of Liam and Lily
= 378 - 121
= 257
257 - 130 - 102
= 25
= 2 tens 5 ones
(a) Digit in the ones place of Liam's height = 5
(b) Digit in the tens place of Anthony's height = 2
Answer(s): (a) 5; (b) 2