At what rate of compound interest per annum will a sum of rupees 2500 become rupees 2500 in 2 years​

2500 for 2 years at 4 per cent per annum , compound intrest being reckoned semi-annually.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}