Choose the equation that could be used to solve this problem. The product of a number and 3 is 87. What is the number?

A) 3x = 87

B) x + 3 = 87

C) x 3 = 87

D) x - 3 = 87

A

in mathematics the product of numbers means multiply the numbers

let x be the number, then the product of x and 3 = 3x

the result of this multiplication is 87

so 3x = 87 is the equation to solve the problem

the solution is x = 29