Question

Which experssion represents the product of 3 and (5/4+1.8)?

Answer 1

Question:

Which expression represents the product of 3 and (5/4n + 1.8)?

A) 5.55n

B) 9.15n

C) 3.75n + 1.8

D) 3.75n + 5.4

Answer:

Option D

$\text{The product of 3 and } \frac{5}{4}n + 1.8 \text{ is } 3.75n + 5.4$

Solution:

Given that we have to find product of 3 and $\frac{5}{4}n + 1.8$

Product means multiplication

Hence we have to multiply 3 and $\frac{5}{4}n + 1.8$

Product is given as:

$\rightarrow 3 \times (\frac{5}{4}n + 1.8)$

Multiply 3 with terms inside the bracket

$\rightarrow 3 \times \frac{5}{4}n+ 3 \times 1.8$

Simplify the above expression by reducing to lowest terms

$\rightarrow \frac{15n}{4} + 5.4$

Express in decimal form

$\rightarrow \frac{15n}{4} + 5.4 = 3.75n + 5.4$

Thus option D is correct