Isabella sells only rings and necklaces on her website. Rings sell for $50 each, and necklaces sell for $30 each. If Isabella sold 25 pieces of jewelry and her sales totaled $1050, how many necklaces did Isabella sell

Isabella sold 10 necklaces in total

Let the amount of necklaces sold be x

Let the amount of Rings sold be y

If Isabella sold 25 pieces of jewelry, then;

x + y = 25

x = 25 -y 1

Also, if Rings sell for $50 each, and necklaces sell for $30 each with a total sales of $1050, then;

30x + 50y = 1050 2

Substitute equation 1 into 2:

30(25-y) + 50y = 1050

750 - 30y + 50y = 1050

750 + 20y = 1050

20y = 1050 - 750

20y = 300

y = 15

Recall that x + y = 25

x =25 - y

x = 25 - 15

x = 10

Hence Isabella sold 10 necklaces in total

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Given:

Selling price of a ring = $50

Selling price of necklace = $30

Total pieces of jewelry sold = 25

Total sales = $1050

To find:

The number of rings and necklaces sold.

Solution:

Let number of rings sold be x and number of necklace sold be y.

Total pieces of jewelry sold = 25

           ...(i)

Total sales = $1050

         ...(ii)

Multiply equation (i) by 30 and then subtract the result from equation (ii).

Divide both sides by 20.

Substitute x=15 in (i).

Therefore, the number of rings is 15 and number of necklaces is 10.

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

51840000 cm 2

step-by-step explanation: