So how many does he have left
25-16=9
9 floors left
the want a percentage so 9 out of 25
percent is out of 100
a hack for this specific problem is that 25 is exactly 1/4 of 100 so
9/25 times 1=the same thing so
9/25 times 4/4 (simplifies to 1)=(9 times 4)/(25 times 4)
36/100
this is out of 100 so
36%
of course there is a legit way of solving this problem but this is a hack (this works for factors of 100 like 2,4,5,10,20,25,50)
Answer:
W paid $96
B paid $64
Step-by-step explanation:
Let the total amount paid be $x
From the question, we are told that B pays 4/10
That means what W paid will be;
1-4/10 = 6/10
Thus, we have that;
6/10 * x - 4/10 * x = 32
6x/10 -4x/10 = 32
2x/10 = 32
2x = (32 * 10)
2x = 320
x = 320/2
x = $160
6/10 = 6/10 * 160 = $96
4/10 = 4/10 * 160 = $64
Cross and multiply which should get you 4x=45 then divid 4 to each side and the answer should be x=11.25
Answer:
the nullity of a matrix A is the demision of its null space:nullity A = dim (n(A).
There is a total of 48 games among the three friends.