Mandy brought some flour. she used 30% of the flour to bake cake and 50% of the remainder to make some pancakes. there were 1400 g of flour left. how much flour did Mandy buy?

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dionnegainesjon5976 dionnegainesjon5976

02-06-2017
Mathematics

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Mandy brought some flour. she used 30% of the flour to bake cake and 50% of the remainder to make some pancakes. there were 1400 g of flour left. how much flour did Mandy buy?

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Аноним Аноним · Answer 1 · 2017-06-02T09:40:32+02:00

Аноним Аноним

02-06-2017

1) 100% - 30% = 70% - remainder

70% = 0,7
50% = 0,5

2) 0,5 * 0,7 = 0,35 = 35% - made some pancakes

3) 70% - 35% = 35% = 0,35 (= 1400 g)

4) 1400 : 0,35 = 4000 g = 4 kg - aswer.

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