L + S = 72 so L = 72 - S; 4L - 3S = 78 ie 4(72 - S) - 3S = 78 ie 288 - 4S - 3S = 78 ie 7S = 210 so S = 30 and L = 42. And there you have it!
28 3s
How many 3s are in 15
9
3000/3 = 1000
L + S = 72 so L = 72 - S; 4L - 3S = 78 ie 4(72 - S) - 3S = 78 ie 288 - 4S - 3S = 78 ie 7S = 210 so S = 30 and L = 42. And there you have it!
28 3s
How many 3s are in 15
9
4
16
37.6666667
2,560
3000/3 = 1000
There are: 21/3 = 7
24 of them
203