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6 October, 19:17

20 onions cost £3.00. 25 potatoes cost £6.25. Mr Dean needs 14 onions and 16 potatoes. Calculate the total cost.

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  1. 6 October, 20:37
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    The total cost of 14 onions and 16 potatoes will be £6.10

    Step-by-step explanation:

    Let onion be n and potato by p

    20n = £3.00

    1n = £3.00/20

    = £0.15

    25p = £6.25

    1p = £6.25/25

    = £0.25

    The cost of 1 onion is £0.15, and 1 potato is £0.25

    Then the cost of 14 onion and 16 potatoes together will given as

    14n + 16p

    substituting the values of n and p, we will have

    14*0.15 + 16*0.25

    2.1 + 4

    = £6.10
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