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Q: Which two digits can be interchanged so as to balance the given equation? 87x2–65+182÷38 =155
  • A. 2 and 8
  • B. 5 and 7
  • C. 6 and 2
  • D. 8 and 6
Correct Answer: Option A - In the given equation 87 × 2 – 65 + 182 ÷ 38 = 155, On interchanging the digits 2 and 8. 27 × 8 – 65 + 128 ÷ 32 = 155 216 – 65 + 4 = 155 220 – 65 = 155 155 = 155 Hence, L.H.S. = R.H.S.
A. In the given equation 87 × 2 – 65 + 182 ÷ 38 = 155, On interchanging the digits 2 and 8. 27 × 8 – 65 + 128 ÷ 32 = 155 216 – 65 + 4 = 155 220 – 65 = 155 155 = 155 Hence, L.H.S. = R.H.S.

Explanations:

In the given equation 87 × 2 – 65 + 182 ÷ 38 = 155, On interchanging the digits 2 and 8. 27 × 8 – 65 + 128 ÷ 32 = 155 216 – 65 + 4 = 155 220 – 65 = 155 155 = 155 Hence, L.H.S. = R.H.S.