Tariq travels 16 miles from point X to Y, in straight line, in m minutes, where m > 0. Then he takes a coffee break in a nearby coffee shop for m minutes as well. After finishing his nice coffee, he travels K miles for another 2m minutes if Tariq’s average speed for his whole journey from point X to point Z is 13 miles m minute, what is the value of K?

I got to the step where the equation is16k/ 4m = 13/m

People are saying that we can cancel out the m's. IS that possible?

and why can you. There is 4 m's on the left side and 1 on the right.

BLANK Jul 18, 2020

#2**+2 **

Can you clarify...... from the coffee shop for 2m minutes to point Z?

and this : 13 miles m minute

~EP

...and yes , you can cancel out the m's if you multiply both sides by m you will get

16k~~m~~ / 4~~m~~ = 13~~m~~/~~m~~

and you are left with 16k/4 = 13 (hope you math is correct up until this point)

ElectricPavlov Jul 18, 2020

#3**+2 **

16 miles in m minutes

+ m minutes for coffee

k miles in 2m minutes

average = 13 miles/ m minute

**(16 + k )**/ (m + m + 2m) = 13 miles/m NOTE: 16 + k not 16k

(16+k) / 4m = 13/m

(16+k) / 4 = 13

16 + k = 52

k = 36

ElectricPavlov Jul 18, 2020