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Popolare Word Problems >

Two train leave towns 1340 kilometers apart at the same time and travel toward each other. One train travels 14 kmh slower than the other. If they meet in 5 hours. What is the rate of each train?

Soluzione

Tw o t r ain l e a v e t o w n s 1340 ki l o m e t ers a p a r t a t t h e s am e t im e an d t r a v e l t o w a r d e a c h o t h er . O n e t r ain t r a v e l s 14 kmh s l o w er t han t h e o t h er . I f t h ey m ee t in 5 h o u rs . Wha t i s t h e r a t e o f e a c h t r ain ?

Soluzione

first trai n^{'} s speed : 127

second trai n^{'} s speed : 141

Fasi della soluzione

Translate the problem into an equation:

x \cdot 5 + (x + 14) \cdot 5 = 1340

Risolvi per

x, x \cdot 5 + (x + 14) \cdot 5 = 1340 : x = 127

Trova speed

first trai n^{'} s speed : 127

second trai n^{'} s speed : 141

Esempi popolari

Four consecutive integers add up to 330. What are the integers?four subtracted from three times a number 4 2/7 of what number is 20 1/2 Cody invests 1,067 in a savings account with a fixed annual interest rate of 3% compounded 12 times per year.What will the account balance be after 7 years Sandra puts 2,000.00 into an account to use for school expenses. The account earns 6% interest, compounded monthly. How much will be in the account after 8 years?