Question : Directions: If A denotes +, B denotes ×, C denotes –, and D denotes ÷, then what will come in place of (?) in the following equation?
140 D 7 A 30 = 25 B ? D 8
Option 1: 16
Option 2: 14
Option 3: 32
Option 4: 5
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Correct Answer: 16
Solution :
Given:
If A denotes +, B denotes ×, C denotes –, and D denotes ÷.
140 D 7 A 30 = 25 B ? D 8
After interchanging the letters with symbols the equation becomes –
140 ÷ 7 + 30 = 25 × ? ÷ 8
20 + 30 = 25 × ? ÷ 8
50 × 8 = 25 × ?
400 = 25 × ?
? = 400 ÷ 25
? = 16
So, 16 is the required answer. Hence, the first option is correct.
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