The table shows the heights of Samuel, Michael, and Emily. The average height of three children is 146 cm. The digit in the ones place of Samuel's height and the digit in the tens place of Emily's height are covered by ink blots.
- What is the digit in the ones place of Samuel's height?
- What is the digit in the tens place of Emily's height?
Total height of the three children
= 3 x 146
= 438 cm
Total height of Samuel and Michael
= 438 - 140
= 298
298 - 160 - 101
= 37
= 3 tens 7 ones
(a) Digit in the ones place of Samuel's height = 7
(b) Digit in the tens place of Emily's height = 3
Answer(s): (a) 7; (b) 3