Answer:
The second number is a*t/s
Step-by-step explanation:
s/t = a / x Let x be the second number.
sx = at divide by s
x = at/s
She has 45% of the original amount left
<h3>Ratio and proportions</h3>
Fractions are written as a ratio of two integers
Given the following
Initial amount. = ∈4000
Amount given to her sister = 1/4 * 4000 = 1000
Amount given to her brother = 40% of 3000 = 1200
Amount left = 4000 - (1000+1200)
Amount left = ∈1800
Determine the percentage left
x * 4000 = 1800
x = 1800/4000
x = 0.45
x = 45%
Hence she has 45% of the original amount left
Learn more proportion here: brainly.com/question/19994681
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Answer:
1 1/4 cups of flour
Step-by-step explanation:
First find the amount for 1 serving.
So you divide the amount of 1 1/2 or 1.50 by 4
1.50/4=.375
Now do .375*7= 2.625 cups of flour
Now you need to subtract the amount you already have which is 4 cups.
2.625-1.50= 1 1/4 cups of flour is what you need left
Step-by-step explanation:
Apples cost four times as much as oranges per pound.
If the cost of orange =x
then, cost of apples =4x
But,
the costs of apples =2.80$
So,4x=2.80
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so,oranges costs for per pound =0.70$