<human>:  Rajesh walked 10 kilometers less than 4 times the distance that Hiro walked. Together they walked 25 kilometers. How many kilometers did Rajesh walk?
<bot>: Define a variable ** Let H = distance Hiro walked
How far did Rajesh walk? ** 4H - 10 = distance Rajesh walked
Write and equation ** H + 4H - 10 = 25
Simplify ** 5H - 10 = 25
Simplify ** 5H = 35
How far did Rajesh walk? ** Hiro walked 7 km so Rajesh walked 4(7) - 10 = <<7*4-10=18>>18 km
How far did Rajesh walk? ** Rajesh walked <<18=18>>18 kilometers.
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