Book Maths Puzzle General Mental Ability

What is the measure of the angle formed by the hands of a clock at 7:20.

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Book Other Question

The wheel of an adult's bicycle has diameter 26in. the wheel of a child's bicycle has diameter 18in. To the nearest inch, how much farther does the larger bicycle wheel travel in o One half the square of a number is equal to 16 more than twice the number. What is the number?

if you could please help that would be great!