The table shows the heights of Victoria, Nora, and Benjamin. The average height of three children is 138 cm. The digit in the ones place of Victoria'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 Victoria's height?
- What is the digit in the tens place of Benjamin's height?
Total height of the three children
= 3 x 138
= 414 cm
Total height of Victoria and Nora
= 414 - 117
= 297
297 - 140 - 104
= 53
= 5 tens 3 ones
(a) Digit in the ones place of Victoria's height = 3
(b) Digit in the tens place of Benjamin's height = 5
Answer(s): (a) 3; (b) 5