If 'A' means '+', 'B' means '−', 'C' means '÷' and 'D' means '×', then which of the following equation is correct?
I. 45 A 13 B 38 C 19 D 6 = 46
II. 13 A 47 B 36 C 4 D 5 = 15
Show answer & explanation
Correct answer: C
Explanation
A = +,
B = −,
C = ÷,
D = ×
Equation I
45 A 13 B 38 C 19 D 6 = 46
Upon replacing the signs:
45 + 13 − 38 ÷ 19 × 6 = 46
45 + 13 − 2 × 6 = 46
45 + 13 − 12 = 46
58 − 12 = 46
46 = 46
Equation I is correct.
Equation II
13 A 47 B 36 C 4 D 5 = 15
Upon replacing the signs:
13 + 47 − 36 ÷ 4 × 5 = 15
13 + 47 − 9 × 5 = 15
13 + 47 − 45 = 15
15 = 15
Equation II is correct.
Correct answer = Both I and II