Word problem
mark and melinda collect baseball caps. mark has 7 more than melinda.
togheter they have 115 caps. how many baseball caps does each of them have?
i got: melinda has 54 mark has 61
is that right?
i have 2 more i cant figure out:
1) in a pet store the number of dogs is more than 3 times the number cats. if the pet store has 21 dogs how many cats does it have?
2) in the pet store the number of birds is 10 less than twice the number of rabbits, if the pet store has 56 birds, how many birds does it have?
1) yes I think is right
2) 21x3=63
3) Not quite sure it doesn't make any sense
for question 1 is it 9 cats
The first one is right.
1) The store has less than 7 cats.
2) 56 - 10 = 46
46/2 = 23
so question 1
is 7 cats
i don't follow how you got 7?
question 2 is 23 rabbits
21 dogs
21 = 3c
Solve for c
3x 7 = 21
so c = 7
i get it
thanks
You're welcome. :-)
bored x 100000 paigeee
To solve these word problems, we can use algebraic equations to represent the given information. Let's go through each problem step by step:
1) In this problem, we are told that the number of dogs in the pet store is more than 3 times the number of cats. Let's represent the number of cats as "c". Therefore, the number of dogs would be "3c+1" (since it's more than 3 times the number of cats).
Given that there are 21 dogs in the pet store, we can set up the equation:
3c + 1 = 21
To solve for "c", we subtract 1 from both sides of the equation:
3c = 20
Then, divide both sides by 3:
c = 20/3
However, since we are dealing with whole numbers of cats, we need to round our answer to the nearest whole number. Therefore, the number of cats in the pet store would be 7.
2) In this problem, we are told that the number of birds in the pet store is 10 less than twice the number of rabbits. Let's represent the number of rabbits as "r". Therefore, the number of birds would be "2r-10".
Given that there are 56 birds in the pet store, we can set up the equation:
2r - 10 = 56
To solve for "r", we add 10 to both sides of the equation:
2r = 66
Then, divide both sides by 2:
r = 66/2
Therefore, the number of rabbits in the pet store would be 33.
I hope this helps!