Question

earth fitness tracked the usage of cardio equipment to determine how many members used certain pieces of equipment last weekend. the circle graph below shows the results. cardio equipment used 15% bike 20% stepper 42% treadmill 23% elliptical how many of the 400 members who used cardio equipment did not use a stepper or a treadmill? a 38 members b 62 members c 152 members d 248 members

Explanation:

Step1: Calculate the percentage of members who used a stepper or a treadmill

The percentage of members who used a stepper is 20% and who used a treadmill is 42%. So the combined percentage of members who used a stepper or a treadmill is $20\%+42\% = 62\%$.

Step2: Calculate the percentage of members who did not use a stepper or a treadmill

The total percentage is 100%. So the percentage of members who did not use a stepper or a treadmill is $100\% - 62\%=38\%$.

Step3: Calculate the number of members who did not use a stepper or a treadmill

There are 400 members in total. So the number of members is $400\times\frac{38}{100}=152$.

Answer:

C. 152 members