Question

Mrs. Lin has some flour and wants to make some croissants. The same mass of flour is used for each croissants. If she makes 10 croissants, she will have 280 g of flour left If she makes 15 croissants, she will need another 20 g of flour. What is the mass(in g) of flour Mrs. Lin have?

Answer 1

$hey \: here \: is \: the \: answer \: \\ final \: result \: = 880g \\ \: \\ \\ \: let \: the \: mass \: of \: flour \: lin \: has \\ be \:( x) g \: and \: mass \: of \: each \: \\ croissant \: be \: (y) g \: \\ \\ according \: to \: the \: question \: we \: get \: \\ x - 10y = 280 \\ 15y - x = 20 \\ \\ solving \: these \: two \: equations \\ \: we \: get \: \\ x = 880 \: g \: \: and \: y = 60 \: g \\ \: \\ mass \: of \: flour \: lin \: has \: 880 \: g \\ \\ hope \: you \: understand \: my \: answer \: \\ and \: it \: may \: helps \: you \: .. \\ apogoize \: me \: if \: there \: are \: any \: \\ errors \: .$