Tyrone is converting 40/50 to a percent. Which method should he use to find the percent?

a) Divide the numerator and denominator of the fraction by 2.

b) Subtract 40 from the numerator and denominator of the fraction.

c) Multiply the numerator and the denominator of the fraction by 2.

d) Add 50 to the numerator and denominator of the fraction.

C

Step-by-step explanation:

The denominator sets the standard adn now that standard has to be compared to 100%.

Since the relationship between 50% and 100% is 2(double), then we multiply both numerator and denominator by 2 to have the new figures

= 80/100 = 80%

77

step-by-step explanation:

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.