The table shows the heights of Sophia, Rachel, and Joshua. The average height of three children is 144 cm. The digit in the ones place of Sophia's height and the digit in the tens place of Joshua's height are covered by ink blots.
- What is the digit in the ones place of Sophia's height?
- What is the digit in the tens place of Joshua's height?
Total height of the three children
= 3 x 144
= 432 cm
Total height of Sophia and Rachel
= 432 - 131
= 301
301 - 130 - 104
= 67
= 6 tens 7 ones
(a) Digit in the ones place of Sophia's height = 7
(b) Digit in the tens place of Joshua's height = 6
Answer(s): (a) 7; (b) 6