1.

69.90 ÷ 2.15 + 35.20 = 59.79 ÷ ? + 39.911). 52). 13). 74). 2

Answer»

Given EXPRESSION is,

69.90 ÷ 2.15 + 35.20 = 59.79 ÷ ? + 39.91

We can WRITE the given VALUES as:

69.90 ≈ 70 and 2.15 ≈ 2

35.20 ≈ 35 and 59.79 ≈ 60 and 39.91 ≈ 40

Then,

⇒ 70 ÷ 2 + 35 = 60 ÷ ? + 40

⇒ 35 + 35 = 60 ÷ ? + 40

⇒ 70 = 60 ÷ ? + 40

⇒ 70 - 40 = 60 ÷ ?

⇒ 30 = 60 ÷ ?

⇒ ? = 60/30

⇒ ? ≈ 2


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