The table shows the heights of Chloe, Stella, and Zoey. The average height of three children is 157 cm. The digit in the ones place of Chloe's height and the digit in the tens place of Zoey's height are covered by ink blots.
- What is the digit in the ones place of Chloe's height?
- What is the digit in the tens place of Zoey's height?
Total height of the three children
= 3 x 157
= 471 cm
Total height of Chloe and Stella
= 471 - 148
= 323
323 - 150 - 101
= 72
= 7 tens 2 ones
(a) Digit in the ones place of Chloe's height = 2
(b) Digit in the tens place of Zoey's height = 7
Answer(s): (a) 2; (b) 7