Answer:
The correct option is B) 12.
Step-by-step explanation:
Consider the provided information.
Working alone at its constant rate, pump X pumped out ¼ of the water in a tank in 2 hours.
As we know: 
,
The rate of pump X is 
of the water is pumped out of the tank, that means only 
is left to be pumped out.
All 3 pumps pumped out the remaining of the water out in 3 hours.
The combined rate of all three pumps is: 
Pump Y, working alone at its constant rate, would have taken 18 hours to pump out the rest of the water.
The rate of pump Y = 
Let z is the time taken by pump Z, then the rate of pump Z is 
.
Therefore,
Multiplying both sides by 24 z.
Hence, the correct option is B) 12.
Answer:
Ellen's survey is more representative
Answer: 204000
Since the shop buys 15 bottles of soy sauce at a price of Rp. 127,500, the cost of one bottle will be:
= 127500/15
= 8500.
Therefore, the cost of 24 bottles will be:
= 24 × 8500.
= 204000
Answer:
Step-by-step explanation:
U have to multiply 49 by 49 and then subtract 9
Answer:
Step-by-step explanation:
Given the rectangular poster shown in the picture, you know that its dimensions (its width and its lenght) are:
In order to calculate the dimensions of the rectangular at times its current size, you need to multiply the original lenght by and multiply the original width by .
Knowing this, you get:
