You spend 90 minutes practicing flip tricks and slides on your skateboard. the ratio of time spent on flip tricks to time spent on slides is 7: 8. how much time do you spend practicing slides?

42 minutes are spent on practicing flip tricks and 48 minutes are spent on practicing slides.

Step-by-step explanation:

Total practicing time = 90 minutes

Ratio of time spent on flip tricks to slides = 7:8

Let,  x be the total time spent on flip tricks and slides, therefore,

Time spent of flip tricks and slides = 7x+8x = 15x

Total time spent practicing = 15x

Dividing both sides by 15

Time spent of flip tricks = 7x = 7*6 = 42 minutes

Time spent on slides = 8x = 8*6 = 48 minutes

42 minutes are spent on practicing flip tricks and 48 minutes are spent on practicing slides.

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step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

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then, the solutions are: or

nothing extraneous has been found!