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Q: Which two numbers should be interchanged to make the given equation correct? 78 ÷ 48 × 8 + (26 × 7) – 39 + (45 + 15) = 210
  • A. 78 and 45
  • B. 45 and 48
  • C. 48 and 39
  • D. 26 and 15
Correct Answer: Option C - Given:– 78 ÷ 48 × 8 + (26 × 7) – 39 + (45 + 15) = 210 From option (c) On interchanging the number 48 and 39, 78 ÷ 39 × 8 + (26×7)–48+(45+15) = 210 2×8+182–48+60=210 16+182+12=210 210=210 LHS = RHS Hence, option (c) is correct.
C. Given:– 78 ÷ 48 × 8 + (26 × 7) – 39 + (45 + 15) = 210 From option (c) On interchanging the number 48 and 39, 78 ÷ 39 × 8 + (26×7)–48+(45+15) = 210 2×8+182–48+60=210 16+182+12=210 210=210 LHS = RHS Hence, option (c) is correct.

Explanations:

Given:– 78 ÷ 48 × 8 + (26 × 7) – 39 + (45 + 15) = 210 From option (c) On interchanging the number 48 and 39, 78 ÷ 39 × 8 + (26×7)–48+(45+15) = 210 2×8+182–48+60=210 16+182+12=210 210=210 LHS = RHS Hence, option (c) is correct.