Question:
A shop sells pens in three different colours. The table shows the number of pens sold in May for blue and red but not green.
(a) In May, 50% of the pens sold were green. How many pens were sold altogether in May?
(b) In June, the number of pens sold that were red remained the same but there was an increase in the number of pens sold for the other two colours. Did the percentage of pens sold that were red increase, decrease or remain the same from May to June?
Solution:
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