Apples cost $2 each, while oranges cost $3 each. Maria purchased 10 fruits in total and spent $22. How many apples did she buy?

Step-by-step explanation:

Assume that Maria bought all apples. Then the 10 fruits would cost $2 * 10 = $20. However, the actual value is $2 more.

By converting an apple to an orange, the cost will increase by $1. Since we need to increase by $2, there should be 2 oranges.

Hence there are 10 - 2 = 8 apples.

Maria bought 8 apples.

Step-by-step explanation:

given:

Apples cost $2 each, while oranges cost $3 each. Maria purchased 10 fruits in total and spent $22.

find:

How many apples did she buy?

solution:

apples (a) + oranges (o) = 10 eq.1

$2 apple (a) + $3 orange (o) = $22 eq.2

first solve orange from eq.1

a = 10 - o

now, substitute orange in eq.2

2(10 - o) + 3 o = $22

simplify:

20 - 2 o + 3 o  = 22

o = 2

solve a using o = 2

a = 10 - 2

a = 8

therefore,

Maria bought 8 apples.

yes. we do proportions in probabilities.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)