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Day 94: CDS Maths

5 questions. Try each one first, then open its answer.

  1. Question 1

    Time, Speed and Distance. Asked once: CDS 1 2022 (same type asked 5 times) See all 5 of this type

    19
    A car travels from AA to BB at a speed of 40 km/hr, travels back from BB to AA at a speed of 30 km/hr and again goes from AA to BB at a speed of 60 km/hr. What is the average speed of the car?

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  2. Question 2

    Time, Speed and Distance. Asked once: CDS 1 2023 (same type asked 5 times) See all 5 of this type

    40
    The speed of a boat in still water is 15 km/hr. If it can travel 42 km downstream and 28 km upstream in the same time, then what is the speed of the stream ?

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  3. Question 3

    Time, Speed and Distance. Asked once: CDS 1 2022 (same type asked 5 times) See all 5 of this type

    40
    A train XX takes 2 hours less than a train YY to cover a distance of 192 km between two cities. Their average speeds differ by 16 km/hr. How long does the faster train take to cover the journey?

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  4. Question 4

    Triangles. Asked once: CDS 1 2026 (same type asked 5 times) See all 5 of this type

    68
    In a triangle ABC, AB = 18 cm, BC = 22 cm and AC = 15 cm. The bisector of ∠BAC\angle BAC intersects BC at D. What is (BD ×\times DC) equal to ?

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  5. Question 5

    Triangles. Asked once: CDS 1 2022 (same type asked 5 times) See all 5 of this type

    86
    In a right triangle ABCABC, BDBD is perpendicular on hypotenuse ACAC. If AC=9AC = 9 cm and AD=4AD = 4 cm, then what is AB+BCAB + BC approximately equal to?

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