Q11 Ratio and Proportion

3 points

There are some flowers in a shop.

Each flower is either red or yellow.

Each flower is either a tulip or a rose.

For these flowers

number of tulips : number of roses = 6:5

number of red tulips : number of yellow tulips = 3:4

Work out the proportion of the flowers that are red tulips.

Nyour answer

Respuesta :

Answer:

Proportion of the flowers that are red tulips = [tex]\frac{2.57}{11}[/tex]

Step-by-step explanation:

Given - There are some flowers in a shop.  Each flower is either red or

             yellow.  Each flower is either a tulip or a rose.  For these flowers

              number of tulips : number of roses = 6:5  and number of red tulips :    

             number of yellow tulips = 3:4

To find - Work out the proportion of the flowers that are red tulips.

Proof -

Let Total number of flowers in a shop = 11x

As given, number of tulips : number of roses = 6:5

⇒Total number of tulips in a shop = [tex]\frac{6}{11}.11x[/tex] = 6x

   Total number of roses in a shop = [tex]\frac{5}{11}.11x[/tex] = 5x

Now,

As given, number of red tulips : number of yellow tulips = 3:4

⇒Total number of red tulips = [tex]\frac{3}{7}.6x[/tex] = 2.57x

   Total number of yellow tulips = [tex]\frac{4}{7}.6x[/tex] = 3.43x

∴ we get

Proportion of the flowers that are red tulips = [tex]\frac{2.57x}{11x}[/tex] = [tex]\frac{2.57}{11}[/tex]