The table shows the heights of Sofia, Andrew, and Bryan. The average height of three children is 143 cm. The digit in the ones place of Sofia's height and the digit in the tens place of Bryan's height are covered by ink blots.
- What is the digit in the ones place of Sofia's height?
- What is the digit in the tens place of Bryan's height?
Total height of the three children
= 3 x 143
= 429 cm
Total height of Sofia and Andrew
= 429 - 125
= 304
304 - 150 - 105
= 49
= 4 tens 9 ones
(a) Digit in the ones place of Sofia's height = 9
(b) Digit in the tens place of Bryan's height = 4
Answer(s): (a) 9; (b) 4