Jacob has 16 toy cars.3/8 of the cars are red and the rest are blue. how many cars are blue

The number of blue toy cars that Jacob has is 10.

Solution:

Given:

Total number of toy cars = 16

Number of red cars = of the total number of cars =

On dividing 8 and 16 we get 2 i.e.

Total red cars = 6

To find: the number of blue toy cars

Number of blue toy cars = Total number of toy cars - Number of red cars

Hence, blue cars = 10

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)