Two airplanes leave at the same time from airports that are 880 miles apart from each other. If one plane travels 126 miles per hour faster than the other and they pass each other in 2 hours, how fast is each plane traveling?

Soluzione

Tw o ai r pl an es l e a v e a t t h e s am e t im e f ro m ai r p or t s t ha t a re 880 mi l es a p a r t f ro m e a c h o t h er . I f o n e pl an e t r a v e l s 126 mi l es p er h o u r f a s t er t han t h e o t h er an d t h ey p a ss e a c h o t h er in 2 h o u rs, h o w f a s t i s e a c h pl an e t r a v e l in g ?

first plan e^{'} s speed : 283

second plan e^{'} s speed : 157

Fasi della soluzione

Translate the problem into an equation:

x \cdot 2 + (x - 126) \cdot 2 = 880

Risolvi per

x, x \cdot 2 + (x - 126) \cdot 2 = 880 : x = 283

Trova speed

first plan e^{'} s speed : 283

second plan e^{'} s speed : 157