Answer:
Medium: 4 and Large: 6
Step-by-step explanation:
Factor pairs that are equivalent to 10:
1,9
2,8
3,7
4,6
5,5
and so on. So you could do 2.4*9 and 1.8*1. If that doesn't work, switch it around. This coud probably take 1/2 of a hour or more. But it'll be worth it if it's a grade. :3
In the end, I'm pretty sure you should be able to get the answer:
Medium cups: 4
Large cups: 6
1.8 multiplied by 4 would get you 7.2 and 2.4 multiplied by 6 would get you 14.4. If you add them all up, you would get a 21.6! If you didn't, check your math again.
Answer:the number of medium packs is 4
the number of large packs is 6
Step-by-step explanation:
Let x represent the number of medium packs that she bought.
Let y represent the number of large packs that she bought.
Ivy has 10 packs of cup for her holiday party. This means that
x + y = 10
a pack of medium cups costs 1.80 and a pack of large cups costs 2.40 she paid a total of 21.60. This means that
1.8x + 2.4y = 21.60 - - - - - - - - 1
Substituting x = 10 - y into equation 1, it becomes
1.8(10 - y) + 2.4y = 21.60
18 - 1.8y + 2.4y = 21.6
- 1.8y + 2.4y = 21.6 - 18
0.6y = 3.6
y = 3.6/0.6 = 6
Substituting y = 0.6 into x = 10 - y, it becomes
x = 10 - 6 = 4
