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percentage

• this is commonly used to express the marks
• ex- ajay scored 30 in math out of 50
• 20 in science out of 25
• 15 out of 20 in english
• maths marks= 30 by 50
• science marks=20 by 25
• english marks= 15 by 20
• lcm of 50,25,20=100
• .
• therefore 30 by 50x2=60 by 100
• 20 by 25 x 4=80 by 100
• 15 by 20 x 5 =75 by 100
• there fore he scored the higest in science

Slide 2