rosala

oh sorry.....fingers you know!

so do find this wed do it like

40/100 x  240,000

now cut the zeroes of 40 , 100 and 240000

so we have!

=4 x 24,000

now simply multiply!

but CPhill wheres the 100...im suspecting you all dont like 100 hun?

oh no....all my brain work has just gone  a waste!

ok!

so the square root of 5 is 

√5 = 2.2360679774997897

now lets get its 5 times so

2.2360679774997897^5 = 11.1803398874989485

now lets take out the square root of this!

√11.1803398874989485 = 3.3437015248821101227

There you go ! your answer is $$3.3437015248821101227$$

$$frui!$$

i think we will solve this like .....

the formula to find simple interest is 

PRT/100

thats 

principal * rate * time/100

now lets put the numbers

principal= 1200

rate= 3.4%

time 5.5 years

so

1200 * 3.4 * 5.5 / 100

now divide them all!

= 1122 / 5

= 224.4

so thats the interest he gets!

i didnt check it...i will

i didt work it out...oops.....i just...guessed....thought shortcut may help.....but it betrayed!

its been going good.........im justa  bit worried though,,,,hows yours?

thats a really clever example melody!