Buses
jennifer left her house at 6: 45 a. m.
it took her 8 minutes 45 seconds
to walk to the bus stop. she waited
34 minutes for the bus and then rode
the bus 74 minutes to her school. at
what time did she arrive at school?

8:41:45 am

Step-by-step explanation:

Left at 6:45, walked 8 min 45 sec, arrived at bus stop at 6:53:45, wait 34 min for bus, arrived at 7:27:45, rode the bus 74 min. 60 min in an hour, makes 7 an 8 and add the left over 14 min to the 27 min and still have 45 sec meaning she arrived at school at 8:41:45 am.

20%

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4