Martin was given 10 math problems, and he has answered 7 of them. What percent of the problems does Martin have left to do? A) 3% B) 7% C) 30% D) 70%I NEED THE ANSWER LIKE RIGHT NOW!!!

The answer to your question is the letter C.

Step-by-step explanation:

Data

Number of problems = 10

Problems answered = 7

Percent of problems do not answer = ?

Process

1.- Calculate the percent of problems answered

                 10 problems 100 %

                   7 problems x

                   x = (7 x 100) / 10

                   x = 700 / 10

                   x = 70 %

2.- Calculate the percent of problems left to do.

Problems left = 100 - 70

                      = 30%      

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice