Question

Find the missing entries A and B in the given calculation.

• A. A = 9 flats
  B = 9 rods
• B. A = 8 flats
  B = 9 rods
• C. A = 9 flats
  B = 8 rods
• D. A = 8 flats
  B = 8 rods

Answer 1

The correct option is B A = 8 flats

B = 9 rods
The possible values of A and B are:

Case	Value of A	Value of B
Case 1	9 flats	9 rods
Case 2	8 flats	9 rods
Case 3	9 flats	8 rods
Case 4	8 flats	8 rods

First, we perform the calculation for Case 1.

Taking A = 9 flats and B = 9 rods, we get:


So, when A = 9 flats and B = 9 rods, the sum is 32.23.

Next, for Case 2:
A = 8 flats and B = 9 rods

Adding the numbers, we get:


So, when A = 8 flats and B = 9 rods, the sum is 31.23.

For Case 3:
A = 9 flats and B = 8 rods

Adding the numbers, we get:


So, when A = 9 flats and B = 8 rods, the sum is 32.13.

Finally for Case 4:

Taking A = 8 flats and B = 8 rods, we get:


So, when A = 8 flats and B = 8 rods, the sum is 31.13.

Tabulating the final sum value in each case, we get:

Value of A	Value of B	Final Sum
9 flats	9 rods	32.23
8 flats	9 rods	31.23
9 flats	8 rods	32.13
8 flats	8 rods	31.13

So, the only set of A and B that gives 31.23 as the sum is A = 8 flats and B = 9 rods

∴ The missing entries in the calculation are A = 8 flats; B = 9 rods