Percentage Calculations

Standard Ratios and their Percentages
1)1/2                5) 3/4

2)1/3               6) 5/4

3)2/3               7) 3/2

4)1/4               8) 5/2

Ans. 1) 50% 2) 33% 3) 66%  4) 25%  5) 75%  6) 125% 7) 150% 8) 250%

Percentage Calculations
1) 5 of 60

1) 75% of 45

Concept of Addition and Multiplication in Percentages
Assume x and y as two variables forming total of (x+y).

Comprehensive Questions
Questions :

1) x & y are given as y = 2x . By How much percentage is y greater or lesser than x ?

2) If the value of g is increased by double it's original value, What is it's percentage increase ?

3) The value of a variable p changes and becomes q, such that q = 3p + 2 . Calculate the percentage increase or decrease of p.

4) The value of a variable 'A' changes and becomes 'B' ; such that 2B = 3A - 2  . Calculate the percentage change of 'A' . Does it increase or decrease ?

5) The Ratio of A to B is 3:2 ; What are the percentages of A & B out of total ?

6) If x is 62% of y and z is 38% of y, then what is the percentage of y in (x+y+z)

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