Question : Direction: In this question, some equation are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.
8 + 5 – 5 = 45
12 + 6 – 5 = 77
14 + 5 – 10 = ?
Option 1: 60
Option 2: 80
Option 3: 58
Option 4: 76
Correct Answer: 80
Solution : Here, in the given equations, we have –
8 + 5 – 5 = 45 ⇒
8 x 5 + 5 = 45
12 + 6 – 5 = 77 ⇒
12 x 6 + 5 = 77
Here, from the above two equations we can conclude that '+' means 'x' and '–' means '+'.
Therefore, 14 + 5 – 10 ⇒ 14 x 5 + 10 = 80.
Hence, option second is correct.
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