A shop sells packs of black pens, packs of red pens and packs of green pens.

There are:

3 pens in each pack of black pens

5 pens in each pack of red pens

6 pens in each pack of green pens

On Monday

number of packs sold of black, red and green pens = 7 : 2 : 4

A total of 220 were sold.

Work out the number of green pen sold. Show your working out.

There are 96 green pens sold.

Step-by-step explanation:

Since we have given that

Number of pens in each pack of black pens = 3

Number of pens in each pack of red pens = 5

Number of pens in each pack of green pens = 6

Ratio of number of packs sold of black, red and green pens = 7: 2: 4

Number of total pens sold = 220

So, ratio of pens in number of packs would be

So, Number of green pens sold would be

Hence, there are 96 green pens sold.