Solving Proportions
x/36=5/4
4x=180
x=45
3/10=($12.60)/p
3p=126
p=42
On rainy days, Max likes to ride the stationary bike at the gym. Yesterday, he rode for 30 minutes and covered 6 miles. Today, he plans to ride 8 miles. Assuming he rides at the same rate, how many minutes will it take Max to ride today?
下雨天，Max 喜欢在健身房骑固定自行车。昨天，他骑了 30 分钟，骑了 6 英里。今天，他计划骑 8 英里。假设他以相同的速度骑行，Max 今天需要多少分钟才能骑完？
30/6=x/8
6x=240
x=40
2.2/m=1.75/3.5
1.75m=7.7
m=4.4
($13.75)/5=($24.75)/c
13.75c=123.75
c=9
Aaron is selling lemonade. He is mixing lemon concentrate with water to create the lemonade. He needs 2 cups of lemon concentrate for every 9 cups of water. Aaron will use 36 cups of water. How much lemon concentrate should Aaron add to the water to make the lemonade?
Aaron 正在销售柠檬水。他将柠檬浓缩液与水混合以制作柠檬水。每 9 杯水需要 2 杯柠檬浓缩液。Aaron 将使用 36 杯水。Aaron 应该在水中添加多少柠檬浓缩液来制作柠檬水？
2/9=x/36
9x=72
x=8
(3x)/16=9/4
3x*4=144
12x=144
x=12
This is a true question Ms. Chandra's co-worker at the boba shop asked her. Convert 25 pounds to ounces. Note that 1 pound=16 ounces.
这是 Chandra 女士在奶茶店的同事问她的一个真实问题。将 25 磅换算成盎司。注意 1 磅 = 16 盎司。
(1 lb)/(16oz)=(25lb)/x
x=25*16
x=400
400 ounces
Kaili picked 21 cups of ripe strawberries from her garden. She plans to use all of the strawberries to make strawberry jam. Her recipe calls for 2 cups of sugar for every 7 cups of strawberries. How many cups of sugar does Kaili need to use?
Kaili 从自家的花园里摘了 21 杯成熟的草莓。她计划用所有的草莓来做草莓酱。她的配方要求每 7 杯草莓加 2 杯糖。Kaili 需要用多少杯糖？
2/7=x/21
7x=42
x=6
8/11=4/(y+2)
8(y+2)=44
8y+16=44
8y=28
y=7/2=3.5
1 ounce (oz) is approximately 30 milliliters (mL). How many milliliters (mL) is 400 ounces (oz)?
1 盎司 (oz) 约为 30 毫升 (mL)。400 盎司 (oz) 等于多少毫升 (mL)？
(1oz)/(30mL)=(400oz)/x
x=12000
12,000mL
You can buy 6 bottles of water for $7.56. How much would it cost, c, to buy 20 bottles?
您可以花 7.56 美元购买 6 瓶水。购买 20 瓶水需要花多少钱？
6/($7.56)=20/c
6c=151.2
c=25.2
$25.20
(x+4)/27=2/9
9(x+4)=54
9x+36=54
9x=18
x=2
35/(x-10)=28/16
28(x-10)=560
28x-280=560
28x=840
x=30
Cynthia's Food Truck is selling 5 lu rou fan (braised pork rice) bowls for $32.50. How much does it cost to buy 12 lu rou fan bowls?
Cynthia 的餐车以 32.50 美元的价格出售 5 碗卤肉饭。购买 12 碗卤肉饭需要多少钱？
5/($32.50)=12/x
5x=390
x=78
$78