Comprehension Passage
Directions: Study the following data and answer the following questions.
Total of 900 customers visited the shop. 520 customers bought Blue pens and 270 customers bought both red and blue pens. 490 customers bought Red pens. Some customers didn’t buy any pens.Find the average number of customers who bought only Red and only Blue pens.
1
235
2
260
3
290
4
220
5
240