If I denotes ‘÷’, J denotes ‘×’, K denotes ‘−’ and L denotes ‘+’, then what will come in place of ‘?’ in the following equation?
42 L 18 K (7 J 4) L (21 I 3) J 9 L 22 = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 117.
The given equation is: 42 L 18 K (7 J 4) L (21 I 3) J 9 L 22
I denotes ‘÷’, J denotes ‘×’, K denotes ‘−’ and L denotes ‘+’.
By replacing the letters with their corresponding signs, the equation becomes:
42 + 18 − (7 × 4) + (21 ÷ 3) × 9 + 22
= 42 + 18 − 28 + 7 × 9 + 22
= 42 + 18 − 28 + 63 + 22
= 42 + 18 − 28 + 63 + 22
= 145 − 28
= 117
Hence, option 1 is the correct option.