What is the percentage of green pens, if 7 out of 20 pens are green?
Percentage of green pens = 720×100% =35 %
Ritu has 20 pens. 100% of her pens are green. How many green pens Ritu has?
Ritu has 20 pens. 100% of her pens are green. So, how many green pens does Ritu have?
There are 30 pens in a box. Nine are yellow, 4 are black and 7 are green. What's the probability that a pen which is taken from the box without looking will be green?