divide aed 16000 into two parts so that the simple interest on the first part for 5 years at 12% per annum is equal to si on the second part for 2 years at 18% per annum.

let first part be x

then second part will be 16000-x

SI for first part= x*5*12/100= 0.6x

SI for second part= (16000-x)*2*18/100=5760-0.36x

as per question

5760-0.36x = 0.6x

5760=0.96

x=6000

one part = 6000

another part=16000-6000=10000

Step-by-step explanation:

add the numbers under frequency to find the total number:

5 + 8 +7 + 4 + 0 +1 = 25

the answer is 25.