K:A
5:3 (before)
15:9
since the total number of stamps didn't change, the total ratio should be the same.
7:5(after)
14:10
so this means 1 unit is 10stamps.
14-10=4
4 X 10= 40
Kaye have 40 more stamps than Alberto.
Answer:
n-9=13
n=22
Step-by-step explanation:
Say the percentage increase is 25%. If you have the whole number of 30 then you would multiply 30 by .25. You should therefore get 7.5 once both are multiplied. That means you should add 7.5 to 30, and your final answer will be 37.5.
1/6 of 24 = 4
3/7 of 21 = 9
1/3 of 21 = 7
The question can't be solved because we can't have negative sign under square root
