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phoenix9801
- Master | Next Rank: 500 Posts
- Posts: 190
- Joined: Thu Jan 14, 2010 8:29 pm
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Using this formula D=R*T can someone please show me the most simplest way I can solve this hard problem. Please explain in the most simplest way possible and in details. Thanks
If you can show me how to solve both ways like backward solving, picking number, and algebraically I would greatly appreciate it.
If Dan has increased his average speed by 20 miles per hour, he would have decreased the time it took him to drive from his job to a certain restaurant by 25%. What was Dan's actual average speed, in miles per hour, when he drove from his job to the restaurant.
a) 30
b) 40
c) 45
d) 50
e) 60
If you can show me how to solve both ways like backward solving, picking number, and algebraically I would greatly appreciate it.
If Dan has increased his average speed by 20 miles per hour, he would have decreased the time it took him to drive from his job to a certain restaurant by 25%. What was Dan's actual average speed, in miles per hour, when he drove from his job to the restaurant.
a) 30
b) 40
c) 45
d) 50
e) 60
