Question

Detective Z has 84 inches of silk cloth out of which Steady takes away 48 inches. How many inches of cloth does Detective Z have now?
Use a mental math strategy to find the answer quickly.

• A. (i) 2 (ii) 46 (iii) 38 (iv) 36
• B. (i) 2 (ii) 50 (iii) 36 (iv) 38
• C. (i) 2 (ii) 50 (iii) 34 (iv) 36
• D. (i) 2 (ii) 46 (iii) 34 (iv) 36

Answer 1

The correct option is C (i) 2 (ii) 50 (iii) 34 (iv) 36

Length of the silk cloth Detective Z has $=84\text{inches}$
Length Steady takes away $=48\text{inches}$
Remaining length $=84-48\text{inches}$
Using the mental math ability of compensation, we can solve the question.Therefore, Detective Z is left with 36 inches of silk cloth.
Option A (i) 2 (ii) 50 (ii) 34 (iii) 36 is the correct answer.