If 30 A 30 B 7 C 40 = 280 and 38 A 40 B 20 C 100 = 938, then 6 A8 B 4C5=?

Correct option is B

Given:
30 A 30 B 7 C 40 = 280
38 A 40 B 20 C 100 = 938
6 A 8 B 4 C 5=?
Let A = +
B = ×
C = +
30 A 30 B 7 C 40 = 280 after interchange the sing we get following equation –
30 + 30 × 7 + 40 = 280
30 + 210 + 40 = 280
280 = 280
And
38 A 40 B 20 C 100 = 938 after interchange the sing we get following equation –
38 + 40 × 20 + 100 = 938
38 + 800 + 100 = 938
938 = 938
Similarly,
6 A 8 B 4 C 5=? after interchange the sing we get following equation –
6 + 8 × 4 + 5=?
6 + 32 + 5=?
? = 43
Correct answer is (b) 43.