8 is 7
9 is 0.666666666667
36 miles an hour
3miles/5min to x/60min multiply top and bottom by 12 and you get 36miles/60min
Sorry I haven’t done elevation before but I think 7 I don’t know random guess
Answer:
$3100
Step-by-step explanation:
Step one:
given data
Principal = $2500
rate = 1.2%
time = 20 years
Step two:
The simple interest is expressed as
SI= PRT/100
substitute
SI= 2500*1.2*20/100
SI= $600
The account balance after 20 years is
= principal + Simple interest
= 2500+600
= $3100
<h2><u>Solution</u> :-</h2>
Let the usual speed of bus be x km/hr.
Time = Distance / Speed = 300/x hrs
According to the question,
=> (300/x - 2) (x + 5) = 300
=> (300 - 2x)/x (x + 5) = 300
=> 300x + 1500 - 2x² - 10x = 300x
=> 2x² + 10x - 1500 = 0
=> 2(x² + 5x - 750) = 0
=> x² + 30x - 25x - 750 = 0
=> x(x + 30) - 25(x + 30) = 0
=> (x - 25) (x + 30) = 0
=> x = 25 or x = - 30
∴ x ≠ - 30 (Because speed can't be negative)
<u>Hence</u>,
The usual speed of bus = 25 km/hr
