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Correct the following equation by interchanging the two signs.
1286 ÷ 4 × 61 × 2 ÷ 2 + 63 – 121.5 = 324
  • a)
    + and –
  • b)
    × and +
  • c)
    – and ÷
  • d)
    + and ÷
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Correct the following equation by interchanging the two signs.1286 &di...
Given equation: 1286 ÷ 4 × 61 × 2 ÷ 2 + 63 – 121.5 = 324
Let’s check each option,
1) Interchanging + and – :
Equation will become 1286 ÷ 4 × 61 × 2 ÷ 2 - 63 + 121.5
= 321.5 × 61 × 1 – 63 + 121.5
= 19611.5 – 63 + 121.5
= 19548.5 + 121.5
= 19670
2) Interchanging × and + :
Equation will become 1286 ÷ 4 + 61 + 2 ÷ 2 × 63 – 121.5
= 321.5 + 61 + 1 × 63 – 121.5
= 321.5 + 61 + 63 – 121.5
= 324
3) Interchanging – and ÷ :
Equation will become 1286 - 4 × 61 × 2 - 2 + 63 ÷ 121.5
= 1286 – 4 × 61 × 2 – 2 + 63 ÷ 121.5
= 1286 – 488 – 2 + 0.52
= 796.52
4) Interchanging + and ÷ :
Equation will become 1286 + 4 × 61 × 2 + 2 ÷ 63 – 121.5
= 1286 + 4 × 61 × 2 + 0.032 – 121.5
= 1286 + 488 + 0.032 – 121.5
= 1652.532
Thus, using option 2, we get correct answer.
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Most Upvoted Answer
Correct the following equation by interchanging the two signs.1286 &di...
Given equation: 1286 ÷ 4 × 61 × 2 ÷ 2 + 63 – 121.5 = 324
Let’s check each option,
1) Interchanging + and – :
Equation will become 1286 ÷ 4 × 61 × 2 ÷ 2 - 63 + 121.5
= 321.5 × 61 × 1 – 63 + 121.5
= 19611.5 – 63 + 121.5
= 19548.5 + 121.5
= 19670
2) Interchanging × and + :
Equation will become 1286 ÷ 4 + 61 + 2 ÷ 2 × 63 – 121.5
= 321.5 + 61 + 1 × 63 – 121.5
= 321.5 + 61 + 63 – 121.5
= 324
3) Interchanging – and ÷ :
Equation will become 1286 - 4 × 61 × 2 - 2 + 63 ÷ 121.5
= 1286 – 4 × 61 × 2 – 2 + 63 ÷ 121.5
= 1286 – 488 – 2 + 0.52
= 796.52
4) Interchanging + and ÷ :
Equation will become 1286 + 4 × 61 × 2 + 2 ÷ 63 – 121.5
= 1286 + 4 × 61 × 2 + 0.032 – 121.5
= 1286 + 488 + 0.032 – 121.5
= 1652.532
Thus, using option 2, we get correct answer.
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Correct the following equation by interchanging the two signs.1286 &di...
Answer B
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Correct the following equation by interchanging the two signs.1286 ÷ 4 × 61 × 2 ÷ 2 + 63 – 121.5 = 324a)+ and –b)× and +c)– and ÷d)+ and ÷Correct answer is option 'B'. Can you explain this answer?
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