If sam buys a $400 iphone from the apple store at 25% off and then sells it to suzy 30% off what he paid how much will suzy pay for phone?

The answer is 210 because, first you take $400 and subtract 25%  and you get $300, then you take $300 and subtract 30% and you get the difference $210. So Sam sole the iphone for $210.

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.