9 and a half hours. That is kind of a long time
K= 4 because 8-4= 5. Therefore K= 4
$156.
you would change the 30% to a decimal by moving the decimal point two spaces to the right.
this would get you .30 or .3
you would then multiply the $120 by .3
you would get 36
then since she saved 30% MORE you would add the 36 to the 120 and get 156
Let 'x' be the initial weight of Hamid.
He gained 0.10x kg (10% of his first weight)
His current weight:
0.10x + x = 88
1.10x = 88
x = 88/1.10
x = 80 kg
You just need to list the factors of all 3 numbers, and see what numbers they have in common!
15: 1,3,5,15
18: 1,2,3,6,9,18
12: 1,2,3,4,6,12
so in all you can say that the common factors of 15,18,12 is: 1 and 3
