Question

P is 30% of a and Q is 20% of a and R is 50% of a. Write P+Q+R in terms of a.

Answer 1

Answer:

the terms of a=100

Step-by-step explanation:

a= P+Q+R

a= P+Q+R a=30%+20%+50%

a= P+Q+R a=30%+20%+50% a= 100%

Answer 2

Answer:

a

Step-by-step explanation:

Given:-

P = 30% of a

= (30 × a)/100

= 30a/100

= 3a/10

Similarly,

Q = 20% of a

= (20 × a)/100

= 20a/100

= 2a/10

R = 50% of a

= (50 × a)/100

= 50a/100

= 5a/10

(The reason I kept the denominator 10 because it is easy to add rather than taking LCM if the simplest fractions)

Sum:-

P + Q + R

= 3a/10 + 2a/10 + 5a/10

= (3a + 2a + 5a)/10

= 10a/10

= a

Thus, P + Q + R in terms of a = a.

Hope it helps

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