Mr Hamilton can ride a bicycle 15 km in 48 minutes. At this rate, how long will it take him to cycle 20 km?

64 minutes

Step-by-step explanation:

Start by finding the rate how many minutes does it take to ride a km by dividing 48 by 15

48/15= 3.2

Now multiply 3.2 by 20 to find how many minutes it will take to ride 20 km

3.2x20=64

answer: haha (: i’ll go see what it is

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584