Question

1. Mohini save 400 from her salary. If this is 10% of her salary, then what is her salary?

2. 16% of the apples in a basket go bad. If there are 42 good apples in the basket, find the total number of apples in the basket.
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Answer 1

Answer:

1. let the salary of mohini be x

10%×x=400

10x/100=400

x=40000/10

4000

thus her salary is 4000

2. Given,  

16% of the total apples is bad.  

The number of total good apples = 42  

For calculating,the total number of apples,we have to calculate the total number of bad apples.  

Let,the total apple = x  

(Assume x as a variable to perform the further mathematical calculations.)  

So,  

The percentage of good apples = 100-16 = 84%  

So,the number of good apples = x × 84/100 = x × 42/50 = x × 21/25  = 21x/25  

Now,if we compare the number of good apple that we have calculated and the number of good apples is given in the question,we will get the following mathematical equation.  

21x/25 = 42  

x = 42 × 25/21  

x = 50  

Hence,there are 50 apples in the basket.