Answer:
3 dozen of mangoes were bought.
Step-by-step explanation:
Given that:
Mangoes were bought at the rate of Rs. 1.50 per dozen
Mangoes were sold at the rate of Rs. 2.50 per dozen
Profit made = Rs. 2.25
Let,
x be the dozen of mangoes bought.
Profit = Selling cost - Purchase cost
2.25 = 2.25x - 1.50x
2.25 = 0.75x
0.75x = 2.25
Dividing both sides by 0.75
Hence,
3 dozen of mangoes were bought.
Answer:
The value of x = 100 ft^3/ day
Step-by-step explanation:
We need to look at what amount of water comes in and what amount of water leaves
What comes in: x ft^3/ day
What leaves : 500x ft^3/ day
We start with 146 000 ft^3
Water in tank = what we start with + what comes in - what leaves
water in tank = 146000 + x*d - 500*d where d is the number of days
After 365 days , the tank has 0 ft^3 of water
0 = 146000 + x*365 - 500*365
Multiply
0 = 146000 + 365x - 182500
Combine like terms
0 = -36500+365x
Add 36500 to each side
36500 = 36500-36500+365x
36500 = 365x
Divide by 365
36500/365 = 365x/365
100=x
The value of x = 100
Answer:
D
Step-by-step explanation:
A function input can only have ONE output value
so the number 5 can't output two different numbers
-15+11=-4 so Maggie has -4 in her account