Answer:
The fan = x = 400
The heater = y = 3600
Step-by-step explanation:
Let the cost price of
The fan = x
The heater = y
Aaya bought a fan and a heater for Rs 4,000.
x + y = 4000
x = 4000 - y
He sold the fan at a profit of 25%
25% × x = 0.25x
And the heater at a loss of 5%.
5% × x = 0.05y
If he gained 7% on his total outlay, at
Hence:
0.25x + 0.05y = 7% × 4,000
0.25x + 0.05y = 280
Note:
x = 4000 - y
Hence:
0.25(4000 - y) + 0.05y = 280
1000 - 0.25y + 0.05y = 280
Collect like terms
-0.25y + 0.05y = 280 - 1000
-0.20y = -720
y = -720/0.20
y = 3600
x = 4000 - y
x = 4000 - 3600
x = 400
Hence, the price that he bought each item is given as:
The fan = x = 400
The heater = y = 3600
There are problems like "what is the greatest number that you need" and those are the problems
Sqrt y = y^1/2
antiderivative = 33 * y^(1/2 + 1) / (1/2 + 1) = 33 * y^(3/2) / 3/2
= 33 * 2/3 * y^(3/2)
= 22 y^(3/2) answer
Answer:
3/14
Step-by-step explanation:
multiple the top across and the bottom across
3(2)=6
4(7)=28
so the answer is 6/28
however that answer is not there, so you must reduce
6/28=3/14
both 6 and 18 can be divided by 2, and you end up with 3/14