Answer:
90 minutes
Step-by-step explanation:
Hey, there! This is a walking together question, let’s walk through it together.
Firstly, we assign a value for the volume of the swimming pool. Let’s say this is x m^3
While working together, their rate is x/30
Now, for the larger hose, it takes 45 minutes. The rate here is x/45. To find the rate at which the smaller hose takes, we simply subtract the rate of the larger hose from that of both while working together.
Mathematically this is x/30 - x/45 = 15x/1350
Now to calculate the time taken, we simply divide the volume by this rate and that is x divided by 15x/1350 or x * 1350/15x = 90 minutes
Method is not mentioned , so
3x - 2y = 12 -----: ( 1 )
6x - 4y = 24 -----: ( 2 )
Now,
= > 24 = 24
= > 2( 12 ) = 24
= > 2( 3x - 2 y ) = 6x - 4y
= > 6x - 4y = 6x - 4y
RHS = LHS
Hence, the equation has infinitely many solutions.
Answer: 400%
25
64
Step-by-step explanation:
Answer:
<h2>Sets of Ratios that are Proportion</h2>
3/11 and 17/6
<h3>12/7 and 36/21</h3>
60/55 and 7/25
7/6 and 52/48
<h3>4/10 and 8/20</h3>
<h3>Solution:</h3>
> 12/7 and 36/21
> 4/10 and 8/20