The table shows the heights of Jamie, Liam, and Benjamin. The average height of three children is 147 cm. The digit in the ones place of Jamie's height and the digit in the tens place of Benjamin's height are covered by ink blots.
- What is the digit in the ones place of Jamie's height?
- What is the digit in the tens place of Benjamin's height?
Total height of the three children
= 3 x 147
= 441 cm
Total height of Jamie and Liam
= 441 - 130
= 311
311 - 170 - 107
= 34
= 3 tens 4 ones
(a) Digit in the ones place of Jamie's height = 4
(b) Digit in the tens place of Benjamin's height = 3
Answer(s): (a) 4; (b) 3