Which of the four changes given in the options would make the following equation correct?
30 × 3 - 3 = 13
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. × changed to ÷; - changed to +.
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Given Equation: 30 × 3 - 3 = 13 Check all the options: Option 1: × Interchanged with - After replacement the equation becomes; = 30 - 3 - 3 = 24 is not equal to 13. Hence, option 1 is not the correct answer. |
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Option 2: × changed to ÷; - changed to + After replacement the equation becomes; = 30 ÷ 3 + 3 = 13 is equal to 13. Hence, option 2 is the correct answer. |
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Option 3: × changed to +; - changed to ÷ After replacement the equation becomes; = 30 + 3 ÷ 3 = 31 is not equal to 13. Hence, option 3 is not the correct answer. |
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Option 4: × Interchanged with -; 3 Interchanged with 30 After replacement the equation becomes; = 30 - 30 - 30 = -30 is not equal to 13. Hence, option 4 is not the correct answer. |