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a parking lot has a total of 60 cars and trucks. the ratio of cars to trucks is 7:3. how many cars are in the parking lot and how many trucks are in the parking lot

 Mar 13, 2016

Best Answer 

 #1
avatar+23254 
+5

One way to look at this problem:

Since the ratio of cars to trucks is 7:3, for every 10 (7 + 3 = 10) vehicles, 7 are cars and 3 are trucks.

How many groups of 10 are there?

Since there are 60 vehicles, 60 / 10 = 6   --->  there are 6 groups of 10.

Since there are 7 cars in each of the 6 groups:  6 x 7  =  42  cars

Since there are 3 cars in each of the 6 groups:  6 x 3  =  18  trucks

 Mar 13, 2016
 #1
avatar+23254 
+5
Best Answer

One way to look at this problem:

Since the ratio of cars to trucks is 7:3, for every 10 (7 + 3 = 10) vehicles, 7 are cars and 3 are trucks.

How many groups of 10 are there?

Since there are 60 vehicles, 60 / 10 = 6   --->  there are 6 groups of 10.

Since there are 7 cars in each of the 6 groups:  6 x 7  =  42  cars

Since there are 3 cars in each of the 6 groups:  6 x 3  =  18  trucks

geno3141 Mar 13, 2016
 #2
avatar
+5

ratio 7:3,

add the ratio numbers: 7+3=10,

divide total by ratio total: 60/10=6 per unit of ratio 

multiply ratio number and the number per unit of ratio

 7*6=42 cars, and 3*6=18 trucks

 Mar 13, 2016

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