Math Challenge

Points A and B are 70 kilometers apart from high way. A car starts from A and another car starts from B at the same time. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other they meet in one hour, what are their speeds?

3 km/h

4 km/h

2 km/h

In a quadrilateral ABCD, the measure of the three angels A, B & C are 110, 70 & 80 respectively. Find the measure of the third angle.

100

150

120

300

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