The table shows the heights of Salik, Jacob, and Matthew. The average height of three children is 147 cm. The digit in the ones place of Salik's height and the digit in the tens place of Matthew's height are covered by ink blots.
- What is the digit in the ones place of Salik's height?
- What is the digit in the tens place of Matthew's height?
Total height of the three children
= 3 x 147
= 441 cm
Total height of Salik and Jacob
= 441 - 146
= 295
295 - 170 - 101
= 24
= 2 tens 4 ones
(a) Digit in the ones place of Salik's height = 4
(b) Digit in the tens place of Matthew's height = 2
Answer(s): (a) 4; (b) 2