Answer:
Sally is 63
Step-by-step explanation:
Represent Sally's age by x and Sam's by y.
Then x = 3y and x + y = 84.
Substituting 3y for x in the second equation, we get:
3y + y = 84, or 4y = 84, or y = 21. Since Sally is 3 times as old as Sam, we multiply 21 by 3: Sally's age is 3(21 years) = 63 years
Raymond's stamp collection ➞x
Alice′s stamp collection➞75%x
75%x-40%×75%x+140=x-20%x
75%x-30%x+140=80%x
45%x+140=80%x
140=80%x-45%x
x=400
Raymond′s stamp collection ➞400
Alice′s stamp collection➞300
Alice sold 300×40%=120
Answer:120
Answer:
P+S+G=7.5
P+2S=8
2G+S+2P=13
Step-by-step explanation:
price of popcorn P
price of soda S
price of gummies G
solve for how much each item costs:
(numbers in front of the letters signify the amount bought)
P+S+G=7.5
P+2S=8
2G+S+2P=13
Answer:
15898.94
Step-by-step explanation:
First find the amount the tax is
6% = 0.06
14999 * 0.06 = 899.94
Add the amount of tax to the total amount of the net price (the price before tax)
14999 + 899.94 = 15898.94
Answer:
7 1/8 miles.
Step-by-step explanation:
