We are given the dimensions of a cell phone, length=2.4 inches, width=4.8 inches and the company making the cell phone wants to make a new version whose length will be 1.56 inches. We are required to find the width of the new phone.
Since the side lengths in the new phone are proportional to the old phone, we can write the ratio of the length of the new phone to the old phone as: 1.56/2.4 = x/4.8 (proportional)Multiplying both sides of the above equation by 4.8, we get:x = 1.56 × 4.8/2.4 = 3.12 inches Therefore, the width of the new phone will be 3.12 inches.
How did I get to the solution The length of the new phone is given as 1.56 inches and it is proportional to the old phone. If we call the width of the new phone as x, we can write the ratio of the length of the new phone to the old phone as:1.56/2.4 = x/4.8Multiplying both sides of the above equation by 4.8, we get:
x = 1.56 × 4.8/2.4 = 3.12 inches Therefore, the width of the new phone will be 3.12 inches.
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