10 less than 2upon 5 of a number is 70. What is the number
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200 is the correct answer
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We can easily translate the statement into an algebraic equation and solve it.
Let the number be 'a'.
(⅖)a - 10 = 70
⇒ (⅖)a = 70 + 10
⇒ 2a = 80 × 5
⇒ a = 400 ÷ 2
⇒ a = 200.
The number is 200.
Let the number be 'a'.
(⅖)a - 10 = 70
⇒ (⅖)a = 70 + 10
⇒ 2a = 80 × 5
⇒ a = 400 ÷ 2
⇒ a = 200.
The number is 200.
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