Tonya watched videos for 1/4 of an hour played checkers for 2/5 of an hour and practiced soccer for 1.35 hours how many hours did tonya spend on these three activities

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Step-by-step explanatbuy ion:1/4 +2/5+1.35

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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