The table shows the heights of Jayden, Evan, and Joseph. The average height of three children is 150 cm. The digit in the ones place of Jayden's height and the digit in the tens place of Joseph's height are covered by ink blots.
- What is the digit in the ones place of Jayden's height?
- What is the digit in the tens place of Joseph's height?
Total height of the three children
= 3 x 150
= 450 cm
Total height of Jayden and Evan
= 450 - 115
= 335
335 - 170 - 101
= 64
= 6 tens 4 ones
(a) Digit in the ones place of Jayden's height = 4
(b) Digit in the tens place of Joseph's height = 6
Answer(s): (a) 4; (b) 6