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A confusing question - need help and working! watch

1. (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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Updated: November 11, 2017
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