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受欢迎的 Word Problems >

A hot air balloon travels 18 miles in 3 hours. At this rate, how many miles will the hot air balloon travel in 3/4 hour?

解答

A h o t ai r ba ll oo n t r a v e l s 18 mi l es in 3 h o u rs . A t t hi s r a t e, h o w man y mi l es w i ll t h e h o t ai r ba ll oo n t r a v e l in \frac{3}{4} h o u r ?

解答

trip 2 distance : 4.5

求解步骤

Given Time:

trip 1 : 3

trip 2 : \frac{3}{4}

Given Distance:

trip 1 : 18

Represent the speed in terms of

x :

trip 1 : x

trip 1 Speed x Time 3 Distance 18

Write an equation for trip 1Distance = Speed

\cdot

Time

18 = x \cdot 3

求解

x, 18 = x \cdot 3 : x = 6

speed : 6

Represent the distance in terms of

y :

trip 2 : y

trip 2 Speed 6 Time \frac{3}{4} Distance y

Write an equation for trip 2Distance = Speed

\cdot

Time

y = 6 \cdot \frac{3}{4}

求解

y, y = 6 \cdot \frac{3}{4} : y = \frac{9}{2}

\frac{9}{2} = 4.5

trip 2 distance : 4.5

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