Question

A packet of flour and a bag of onions have a total mass of 3.25kg.

3 similar packets of flour and 2 similar bags of onions weigh 9kg in all.
What is the total mass of 5 such packets of flour?​

Answer 1

Set flour =x and onions=y

We have

{ x + y = 3.25

{ 3x + 2y = 9

x=
`(5)/(2)`

y=
`(3)/(4)`

Good Luck