Answer:
Explanation:
Firstly, we know the formula for percentage which is P = B x R
where Percentage is associated with of,
Base is associated with % and
Rate is associated with is
1. We have, 30% × N= 12
= 30 x N = 12
100
Multiplying both sides by 100 and dividing both sides by 30,
we have N = 12 × 100 N = 12 x 3.33
30
N = 40.
P = 12, B = N and R = 30
2. N is 30% of 12000 = 30/100 x 12000 = 3600
P = N, R = 30 , B = 12000
3. 26 is 40% of N. = 26 X 100 / 40 = 65
P = 26 , R = 40, B = N
4. 60 IS N% OF 80 = N/100 x 80 = 60
80n = 60
100 1
cross multiply. 80n = 6000 N = 75
P = 60, R = N , B = 80
5. 75% of N is 30
N = 75 X100 / 30 = 75 X 3.33 N = 250
P= 30, R = 75, B = 30