When jeffrey works out, he spends 10 minutes doing cardio and 20 minutes doing resistance training. stanley's workout consists of 11 minutes of cardio and 17 minutes of resistance training. who does a lower ratio of cardio to resistance training?

Jeffrey.

Step-by-step explanation:

The ratio of minutes Jeffrey does cardio to resistance is 10:20, while the ratio is minutes Stanley does is 11:17. First, let's express the ratio of Jeffrey's workout in lowest possible terms possible, which is 1:2. how what we want to do is for the ratio's to have a "LCM" so we can compare them. If we multiply Jeffrey's workout by 17 and Stanley's by 2, we will get this:

Jeffrey's workout ratio: 17:34

Stanley's workout ratio: 22:34

Therefore, Jeffrey has a lower cardio to resistance training.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -