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?

mental cunning

explanation:

he is often referred to as a man of twists and turns

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.