A new HDB estate in Punggol has 3 blocks. Block A has 48 572 residents, Block B has 6 409 fewer residents than Block A, and Block C has twice the number of residents in Block B. What is the digit in the thousands place of the total number of residents in all three blocks?
Show Worked Solution
Worked Solution
Step 1: Find Block B residents.
Block B = 48 572 - 6 409 = 42 163
Step 2: Find Block C residents.
Block C = 2 x 42 163 = 84 326
Step 3: Find the total residents.
Total = 48 572 + 42 163 + 84 326
= 90 735 + 84 326
= 175 061
Step 4: Identify the thousands digit.
175 061 -> hundred-thousands: 1, ten-thousands: 7, thousands: 5, hundreds: 0, tens: 6, ones: 1
The digit in the thousands place is 5.
Correct answer: 5
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