2. The button of the first floor is in the elevator at the height of 1 m of 20 cm from a floor. The button of each following floor is higher previous on 10 cm. To what floor will the little boy whose height of 90 cm be able to reach in the elevator if, jumping up, it can reach height exceeding its growth by 45 cm?

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The maximum height - 90+46=135 cm we Will find the floor: (135-120)/10=1.5, i.e. it will be able to pass only 1 floor, it will not reach the following. Answer: to the 2nd floor. The maximum height - 90+46=135 cm we Will find the floor: (135-120)/10=1.5, i.e. it will be able to pass only 1 floor, it will not reach the following. Answer: to the 2nd floor.
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