Question

Ethan goes on a charity journey. He walks one-tenth of the way at 6 km/hr, runs one-sixth at 12 km/hr, cycles one-fifth at 24 km/hr, and completes the remaining 32 km by car at 48 km/hr. How many km does he travel, and how long does it take?

Answer 1

Answer:

Your answer is like this

Step-by-step explanation:

kab+2a²-b²=(a-b)(2a+b),

kab+2a²-b²=2a²+ab-2ab-b²,

kab=-ab,

then

k = -ab/ab,

k=-1

Hence the valuea of k = -1