Answer:
B. 16 hrs
Step-by-step explanation:
Distance = rate × time
The best way to do this is to make a table with the info. We are concerned with the trip There and the Return trip. Set it up accordingly:
d = r × t
There
Return
The train made a trip from A to B and then back to A again, so the distances are both the same. We don't know what the distance is, but it doesn't matter. Just go with it for now. It'll be important later.
d = r × t
There d
Return d
We are also told the rates. There is 70 km/hr and return is 80 km/hr
d = r × t
There d = 70
Return d = 80
All that's left is the time column now. We don't know how long it took to get there or back, but if it took 2 hours longer to get There than on the Return, the Return trip took t and the There trip took t + 2:
d = r × t
There d = 70 × t+2
Return d = 80 × t
The distances, remember, are the same for both trips, so that means that by the transitive property of equality, their equations can be set equal to each other:
70(t + 2) = 80t
70t + 140 = 80t
140 = 10t
14 = t
That t represents the Return trip's time. Add 2 hours to it since the There trip's time is t+2. So 14 + 2 = 16.
B. 16 hours
1 + 4 = 5 (5 parts)
<span>£250/5 = 50 </span>
<span>1 x £50 = 50 </span>
<span>4 x £50 = 200 </span>
<span>so the answer is 50:200 </span>
72 + 72 + 144 + 144 premier is 432 and area is 10368
Answer:
Hey there!
A pie graph is best used for looking at the percentages in each category.
Let me know if this helps :)
Option C:
The second step is draw two circles with radius AB.
Solution:
Given data:
Triangle ABC is an equilateral triangle.
<em>In equilateral triangle, all the sides are equal.</em>
AB = AC = BC
The two circles are overlapping each other.
Each circle touches the center of the other circle.
This means the radius of two circles are equal.
<em>The distance from center to boundary of the circle is radius.</em>
So that AB is the radius of both circles.
Hence the second step is draw two circles with radius AB.
Option C is the correct answer.
