The table shows the heights of Gavin, Jeremiah, and Dylan. The average height of three children is 146 cm. The digit in the ones place of Gavin's height and the digit in the tens place of Dylan's height are covered by ink blots.
- What is the digit in the ones place of Gavin's height?
- What is the digit in the tens place of Dylan's height?
Total height of the three children
= 3 x 146
= 438 cm
Total height of Gavin and Jeremiah
= 438 - 150
= 288
288 - 150 - 109
= 29
= 2 tens 9 ones
(a) Digit in the ones place of Gavin's height = 9
(b) Digit in the tens place of Dylan's height = 2
Answer(s): (a) 9; (b) 2