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

Step-by-step explanation:

p=a×30/100

=3a/10

Q=a×20/100

=a/5

C=a×50/100

=a/2

now....according to the question

P+Q+R=(3a/10)+(a/5)+(a/2)

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

=10a/10

=a.

Answer 2

Answer:

Let say S = 100

then r = 100*40% = 40

q = 40*20% = 8

p = 8*30% = 2.4

p = 2.4 & S = 100

So, p/s = 2.4/100 = 24/1000 = 12/500 = 6/250 = 3/125.