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    (The following is directly taken from a sheet I've been assigned. I'm normally ok with these sorts of things but the maths and structure doesn't make sense to me here. Some clarification would help - it's great revision!)

    "From past data, the govt. sees that consumption rose from £360bn when GDP rose by £61.25bn to £551.25bn: imports rose FROM £60bn. Using this year's figures below, calculate the expected values for all 3 figures below if income next year changes by:

    1) +50bn

    2) +60bn

    3) +100bn

    4) -20bn

    The figures: Consumption is 396 bn, Savings is 24bn, Imports is 62.25 bn.

    I think some multipliers need to be used but my first attempt came close, though not quite accurate enough to be correct. Any tips and workings would be appreciated. Even just a method would be useful.
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