Mathematics
Grade-7
Easy

Question

In a watch store, there is a discount of 28% on the marked price of a watch. If a watch costs $450. The cost price of the watch is ___________$.

  1. 300
  2. 390
  3. 324
  4. 304

hintHint:

first we will be finding the total diacount that the store will give on the selling price and then we will subtract the discount from the selling cost to find the cost price.

The correct answer is: 324


    In this paticular question we have to find out the discount and the cost price which the customer has to pay after the discount on selling price.

    STEP BY STEP SOLUTION 

    28 percent sign space o f space $ 450
28 over 100 cross times 450 space equals space 0.28 space cross times space 450 space equals 126
S o space w e space h a v e space f o u n d space t h e space d i s c o u n t space equals $ 126
space C o s t space p r i c e space equals space s e l l i n g space p r i c e minus space d i s c o u n t
space C o s t space p r i c e space equals space 450 space minus space 126
space C o s t space p r i c e space equals space 324

     

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