Answer:
32.105
Step-by-step explanation:
30
2
+ 0.1
0.005
32.105 so answer is 32.105
Answer:10
x = n of years of mary
x+8= n of years of her bro
So her brother is (x+8)/x times as old as Mary
Let n = the number
4n - 9 = n
3n = 9
n = 3
Assuming the ':' means an = sign, 2=10 simplifies to 2=8
=10 simplifies to 2
=8
