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two cyclists start from the same place in opposite directions one goes towards north at 18 kmph and the other goes towards south at 20 kmph what time will they take to be 47.5 km apart   let...

two guns were fired from the same place at an interval of 10 minutes and 30 seconds but a person in the train approaching the place hears the second shot 10 minutes after the first. The speed of the...

hi my name is sonam, i am a college student and i am really bad in math

After that question is solved there is a continuation to the problem that states: Suppose that four pipes are strapped together with a snugly fitted metal band. How long is the band?

A fertilizer for grass contains 24% nitrogen and another that contains 12%. What quantity of each one do you need to combine to get 100kg of fertilizer that contains 21% nitrogen

When Alexis works overtime (any hours over 40 hours a week), she is paid 1.5 times her regular hourly rate. In one week she worked 53 hours. If her regular hourly rate is \$6.70, what did she...

Two high-speed ferries leave at the same time from a city to go to the same island. The first ferry, the Cat, travels at 34 miles per hour. The second ferry, the Bird, travels at 27 miles per hour...

Megan has many gray socks, white socks, and black socks in a drawer. In the dark she pulled out two socks that did not match. How many more socks does Megan need to pull from the drawer to be certain...

Shadow Math Jeannie is practicing on the basketball goal outside her house. She thinks that the goal seems lower than the 10 ft. goal she plays on in the gym. She wonders how far the...

Lisa plans to use 20 tiles for a border around a square picture frame. She wants a two-color symmetrical design that has a 2 to 3 ratio of white to gray tiles.What could her design look like...

To remind himself of where he buried his treasure, a pirate made this map. He made two of the statements true and one statement false to confuse his enemies in case they captured the map. How will...