method need

[ahsan423]

1. a quantity of tea sold at rs:48 per kg at a profit of 20%. the total gain is rs. 90 . what is the quantity of tea sold?
ans: 11.25kg
2. if 13% is lost by selling goods for rs:1,475. what would be the loss or gain if the goods are sold for rs. 1'615?
ans: loss of 80.40 kg


plz send me the method to solve these problems???? as soon as possible

 

[tkhunny]

This makes little sense. Can you use more words and fewer symbols?

In particular, you have4 both answers in "kg", and yet the frist is "quantity sold" and the second is "loss or gain". The units are suspect on the second.

The first has a chance.

Name stuff.

Q = Quantity Sold in kg

Q*48 = Total Sale Price

Q*48 - Gain = Total Wholesale Price

20% Profit

(Q*48 - Gain)*(20%) = Profit

Now what?

Noyr: There are two ways to think about profit. If this way works out oddly, we'll have to switch.

 

[JeffM]

1. a quantity of tea sold at rs:48 per kg at a profit of 20%. the total gain is rs. 90 . what is the quantity of tea sold?
ans: 11.25kg
2. if 13% is lost by selling goods for rs:1,475. what would be the loss or gain if the goods are sold for rs. 1'615?
ans: loss of 80.40 kg


plz send me the method to solve these problems???? as soon as possible

I presume that rs means rupees. If it does not, I apolgize for my ignorance.

Problem 1
As tkhunny says, name things. Also be careful about units.
Sales in kilograms = S.
Price in rupees per kilogram = P
Rate of profit = R = rupee of profit / rupee of revenue
Total profit in rupees = T

Then specify GIVEN relationships
P = 48
R = 20% = 0.2
T = 90

So you had four variables, but so far have only three equations. So determine whether there are any DEFINITIONAL relationships among the variables. If so, specify them.

Hint: T can be defined in terms of R, S, and P. How?

Problem 2 does not make sense as stated.

Edited to remove use of the word "units" in two different senses.

 

[Denis]

2. if 13% is lost by selling goods for rs:1,475. what would be the loss or gain if the goods are sold for rs. 1'615?
ans: loss of 80.40 kg
plz send me the method to solve these problems???? as soon as possible

As soon as possible? WHY?

I think you meant something like this:
A TV is sold for $1,475; this represents a 13% loss.
If that TV had been sold for $1,615, what would be the loss or gain?

x = TV break-even value
x - 1475 = .13x ; solve:
x = 1695.4022....

1615.00 - 1695.4022.... = -80.4022... (NOT kg!)

If you can't follow that, you need classroom help.