HELP, Need an easy way to show a 7th grader how to do this kind of problems!! Ratio of cats to dogs was 3 to 2. If there were 170 cats and dogs in all, how many were dogs.9:37 pm

Question

saifoo.khan · Answer

7 : 3
170 : x

cross multiply
7(x) = 170(3)
x = 510 / 7
x = 72.85
x = 73 dogs

anonymous · Answer

3     170
-=  ____
2      x   
Then you do 2x170/3=x

saifoo.khan · Answer

oh sorry sorry sorry!

anonymous · Answer

Sooo its 3/2 is equal to 170/113

saifoo.khan · Answer

3 : 2
170 : x

cross multiply
3(x) = 170(2)
x = 340 / 3
x = 113.3
x = 113 dogs

anonymous · Answer

thats not a given answer!!!

anonymous · Answer

is answer 102 cats and 68 dogs?

anonymous · Answer

68 is one of the answers. how did you get it?

anonymous · Answer

easy... ratio of cats to dog is 3:2 from total 170
so 3/5 *170 = cats(102) and 2/5 *170 is dogs (68)  .. adds up to 170

anonymous · Answer

ok thank u!