Question

A number is four more than 45% of d (write as algebraic expression and simplify if possible)

Answer 1

Answer: 9/20d+4

Step-by-step explanation

I assume you're on rsm. It works on the portal, found it on another site, didn't want to copy paste

Answer 2

Answer:

The number is  $\frac{400 + 9d}{100}$

Step-by-step explanation:

• Calculation of percentage of a number: Percentage of a number means product of the number and the percentage.

       Example: (1) 10% of 100 = 100 × 10% = 100 × $\frac{10}{100}$ = 10

       (2) 25% of 200 = 200 × 25% = 200 × $\frac{25}{100}$ = 50

       (3) 50% of 250 = 250 × 50% = 250 × $\frac{50}{100}$ = 125

Now the percentage given in question is:

     45% of 'd' = d's 45% = d × 45% = d × $\frac{45}{100}$ = $\frac{9d}{100}$

• Finding the number:

  The number = 4 more than 45% of d = 4 + 45% of d

                                                                = 4 + $\frac{9d}{100}$

                                                                = $\frac{400 + 9d}{100}$

          ∴ The number is  $\frac{400 + 9d}{100}$

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