Solve by method of substitution a + 2p = 4
x − 2y = 6
solve these problems with working
11.A store clerk sold 25 Mathematics books and 10 English books for a total of $85 500. If
she sold 10 Mathematics books and 40 English books, she would have gotten $13 500
more. Calculate the price of each type of book.
12. The cost of two juice and three patties is $1 750. While the cost of four juice and three
patties is $3 050. Form a pair of simultaneous equations and solve them to determine:
a) the cost of a juice.
b) the cost of a patty.

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.

answer: your correct answer is b. d.

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true