The sum of simple interest and compound interest in 2 years is Rs 202.50 and the rate is 5% per annum. Find the principle.

Principle is Rs.2025

Step-by-step explanation:

SI = P*T*R ÷ 100 (Formula)

P = SI*100 ÷ T*R (for easiness rearrange formula)

P = 202.50*100 ÷ 2*5 (Putting given values)

P = 20250 ÷ 10 (Calculating)

P = Rs.2025

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!