What is 25 decreased by 40%

15

Step-by-step explanation:

40% of 25 is 10, you can find this by multiplying 10 by 2, you get 20 which is now 80% of 25.

Now divide 10 by 2, you get 5. 5 is 20%. Add them all together and you come to a clean 100%.

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step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.