The table shows the heights of Rachel, Chloe, and Hannah. The average height of three children is 152 cm. The digit in the ones place of Rachel's height and the digit in the tens place of Hannah's height are covered by ink blots.
- What is the digit in the ones place of Rachel's height?
- What is the digit in the tens place of Hannah's height?
Total height of the three children
= 3 x 152
= 456 cm
Total height of Rachel and Chloe
= 456 - 136
= 320
320 - 150 - 102
= 68
= 6 tens 8 ones
(a) Digit in the ones place of Rachel's height = 8
(b) Digit in the tens place of Hannah's height = 6
Answer(s): (a) 8; (b) 6