Answer:
270 seconds
Step-by-step explanation:
Melissa's time = x seconds
Abby's time = (x + 30) seconds
Abby walks at a speed of 8 feet per second, and Melissa walks at a speed of 9 feet per seconds.
But, speed =
For Abby,
8 =
distance = 8(x + 30) ................. 1
for Melissa,
9 =
distance = 9x ............. 2
From equations 1 and 2, for the same distance;
8(x + 30) = 9x
8x + 240 = 9x
x = 240 seconds
Abby's time = (x + 30)
= (240 + 30)
= 270 seconds
So that Abby has been walking for 270 seconds when both students had walked exactly the same distance.
Answer:
32
Step-by-step explanation:
15×3=45÷5=8×4=32.
Answer:
x=4 y=5
Step-by-step explanation:
Answer:
8790 / 6=1465
Step-by-step explanation:
From this question we know that there are a total of 8790 fish, with 6 of them being kept in one tank, and we want to know how many tanks there are. So we do 8790 / 6 which gives us 1465.
Answer:
The value of the car in very nice condition will be $35500.
Step-by-step explanation:
Let the value of car in a very nice condition be = x
The value $62125 is or or 1.75 times of x.
Now, we can calculate for x:
x = 35500
Hence, the value of the car in very nice condition will be $35500.