Maths

The points A , B , C, D and E are located on a straight line in that order. The distance from A to E is 20cm. Te distance from A to D is 15cm. The distance from B to E is 10com. C is halfway between B and D. What is the distance from B to C?

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  1. 5 cm

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  2. First you draw a straight line (measured at 20 cm) with A at the beginning and E at the end. Then you know A to D is 15 cm so you can mark D. Next you measure from B to E. You know it is 10 cm so you can mark B. Since C is half-way between B and D, you can get the distance from B to C.

    10 5 5
    A----------B-----D-----E

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