River Ramblet charges $25 per day to rent a kayak. How much will it cost to rent a kayak for 5 days?

Write and solve an equation to solve the problem.

River Ramblet charges $25 per day to rent a kayak. How much will it cost to rent a kayak for 5 days?

Write and solve an equation to solve the problem.

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Fairfax Station, VA

C=cost for number of days

d=number of days

C=25d

if d= 5, C=25*5 = 125

Westminster, CO

Lets call 'C' the cost to rent the kayak,

C = $25/day ($25 per day)

lets call 'D' the number of days the person would like to rent the kayak,

D = 5 days

Lets call T the total cost to rent the kayak

T = ??

To come up with the equation we can think of other scenarios. If it costs $25 per day, how much would it cost to rent for one day?

$25

How much for two days?

$25 + $25 = $50

lets factor this...

$25(1+1) = $50

$25*(2) = $50

Three days?

$25 + $25 + $25 = $75

lets factor this...

$25*(1+1+1) = $75

$25*(3) = $75

Four days?

$25 + $25 + $25 + $25= $100

lets factor this...

$25*(1+1+1+1) = $100

$25*(4) = $100

lets factor this...

$25*(1+1+1+1) = $100

$25*(4) = $100

so in general we can see the equation should be,

Cost*days = total cost

or

C*D = T

so for our question where

C = $25/day

D = 5 days

we have

($25/day)*5days = $125

T = $125

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