First, find the number of pens.
25% x 20 = 25/100 x 20
= 1/4 x 20
= 5
There are 5 pens in the pencil case.
Next, find the number of rulers.
5 - 1= 4
There are 4 rulers in the pencil case.
Then, find the number of pencils.
20 - ( 5+ 4 ) = 20 - 9
= 11
There are 11 pencils in the pencil case.
Kindly show me how to do question 6, a tank was 1/5 full. When another 700ml of water was poured into the tank, it became 2/3 full. Find the capacity of the tank. Thank you for your time!
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