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Question
The height of a box is 15 cm. The height of another box is twice the height of the first box. The total height of the boxes if both are placed one above other is _____.
The height of a box is 15 cm. The height of another box is twice the height of the first box. The total height of the boxes if both are placed one above other is _____.
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Solution
The correct option is B 45 cm
Height of the first box = 15 cm
Height of the second box = 2 × height of first box
= 2 × 15 cm = 30 cm.
Total height of boxes if one is placed above the other = 15 cm + 30 cm = 45 cm
Height of the first box = 15 cm
Height of the second box = 2 × height of first box
= 2 × 15 cm = 30 cm.
Total height of boxes if one is placed above the other = 15 cm + 30 cm = 45 cm
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