Question

The sum of two numbers is 7.5. Their difference is 5.6. What is the product of the numbers? ( A ) 6.2522 ( B ) 6.2225 ( C ) 6.2252 ( D ) 6.5222

Answer 1

Answer:  Hi mate!!!

The product is 6.2225  option (B)

Step-by-step explanation:

Let two no.'s be "x", "y"

x+y = 7.5

   x = 7.5-y                                  ......(i)

     x-y = 5.6

7.5-y-y = 5.6                              .......( Putting value of x from equation (i) )

7.5-2y  = 5.6

      7.5 = 5.6+2y

       2y = 7.5-5.6

       2y = 1.9

         y = 0.95                           .......(ii)

     x+y = 7.5

x+0.95 = 7.5                             ..........( Putting value of y from equation (ii) )

          x = 7.5-0.95

          x = 6.55

Product = 6.55*0.95

              = 6.2225

Hence, option (B) is correct.

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