Answer:
30
Step-by-step explanation:
Let number of tetras be "t"
number of guppies be "g"
number of minnows be "m"
Ratio of tetras to guppies is 4:2, or reducing, 2:1. Thus we can write:
Ratio of minnows to guppies is 1:3, so we can write:
or, m = g/3
Also, total there are 60 fish, so we can write:
t + g + m = 60
or
2g + g + g/3 = 60
Solving this, we can solve for g. Shown below:
Now, finding t and m:
m = g/3 = 18/3 = 6
m = 6
and
t = 2g
t = 2(18)
t= 36
There are 36 tetras and 6 minnows. So, there are
36 - 6 = 30 more tetras than minnows
It would be: 180 - (48+46.7)
= 180 - 94.7
= 85.3 degrees
Given:
Greeting card cost before tax = $4
Discount = 15%
Sales tax = 5%
To find:
How much will the customer pay for the card?
Solution:
It is given that the cost of the greeting card before tax is $4.
After 15% discount, the cost of the greeting card is:
Cost of card after discount 
The cost of card after 5% sales tax is:
Cost of card after tax 
Therefore, the customer will pay $3.57 for the greeting card.
Answer:
z+372=160
Step-by-step explanation:
Answer:
39
Step-by-step explanation:
20
+ 19
———>>> 0+9= 9
——-> 39
2+1= 3
