Percentage = (Blue pens / Total pens) × 100 = (9 / 180) × 100 = 5%
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30% of 120 rupees is calculated as follows:
0.30×120=36
The new price after the reduction is:
120−36=84 rupees.
100
The number of students is x. So
Number of students over 8 years old
= (100-20)% of x = 80% of x
∴ 80% of x = 48 + 23 of48
⇒ 80 100x = 80
⇒ x = 100
600 ÷ 15000 × 100
= (600 × 100) ÷ 15000
= 60000 ÷ 15000
= 0.4
- 600=(x/100)15000 - 600/15000= x/100 - 600*100/15000=x - 60000/15000=x - 60/15= x - 4=x ans= 4%
