The table shows the heights of Aaron, Joshua, and Henry. The average height of three children is 136 cm. The digit in the ones place of Aaron's height and the digit in the tens place of Henry's height are covered by ink blots.
- What is the digit in the ones place of Aaron's height?
- What is the digit in the tens place of Henry's height?
Total height of the three children
= 3 x 136
= 408 cm
Total height of Aaron and Joshua
= 408 - 121
= 287
287 - 150 - 108
= 29
= 2 tens 9 ones
(a) Digit in the ones place of Aaron's height = 9
(b) Digit in the tens place of Henry's height = 2
Answer(s): (a) 9; (b) 2