Answer:
7 cups + 3 litres = 9.8 pints
⇒ Equation 1
5 litres - 9 cups = 6 pints
⇒ Equation 2
Relationship between cups and
Rearranging equation 1 to make pints the subject
⇒ substitute this into Equation 2
Hence, 1 litre = 2.1 cups
Relationship between cups and pints
Rearrange equation 1 to make litres the subject
⇒ Substituting this into Equation 2
Hence, 1 pint = 2 cups
Relationship between pints and liter
Rearranging equation 1 to make cup the subject
⇒ subsitute this into equation 2
Hence, 1 liter = 2.1 pints