Facebook | Bilder fra Berlevåg Hornmusikk
Pictures of my Dad :) Hi hi
tirsdag 27. april 2010
MathGeekFreak is what this blog should have been named!!
Yes! I managed to solve a math puzzle on our math test today!!
Puzzle:
After a party there were 100 emty bottles, the school class sold the big ones for 2,50 Kr and the small ones 1 Kr to recycling. How many bottles were small and how many were big?
The Answer is:
40 were big and
60 were small
How did I find this out?
Okay look! If you just think 2,50 as 25, now how many 25's do you need for a 100? 4, because 4 multiplied with 25 is a 100, now if I make 25 back into 2,50 then I have to make 4 bigger = 40. Because 2,50 multiplied with 40 is = 100
Now I have used 40 bottles= 100 - 40 = 60
60 bottles multiplied with 1 Kr = 60 Kr
60 + 100 = 160 Kr
Puzzle:
After a party there were 100 emty bottles, the school class sold the big ones for 2,50 Kr and the small ones 1 Kr to recycling. How many bottles were small and how many were big?
The Answer is:
40 were big and
60 were small
How did I find this out?
Okay look! If you just think 2,50 as 25, now how many 25's do you need for a 100? 4, because 4 multiplied with 25 is a 100, now if I make 25 back into 2,50 then I have to make 4 bigger = 40. Because 2,50 multiplied with 40 is = 100
Now I have used 40 bottles= 100 - 40 = 60
60 bottles multiplied with 1 Kr = 60 Kr
60 + 100 = 160 Kr
Abonner på:
Innlegg (Atom)