The Ultimate Mathematical Challenge: Over 365 puzzles to test your wits and excite your mind

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Литагент HarperCollins

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Математика

Год написания книги

2018

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In the window of Bradley’s Bicycle Bazaar there are some unicycles, some bicycles and some tricycles. Laura sees that there are seven saddles in total, thirteen wheels in total and more bicycles than tricycles.

How many unicycles are in the window?

[SOLUTION] (#litres_trial_promo)

175. Liz and Mary’s problems

Liz and Mary compete in solving problems. Each of them is given the same list of 100 problems. For any problem, the first of them to solve it gets 4 points, while the second to solve it gets 1 point. Liz solved 60 problems, and Mary also solved 60 problems. Together, they got 312 points.

How many problems were solved by both of them?

[SOLUTION] (#litres_trial_promo)

Week 26 (#ulink_4ca51d59-2d51-5fec-b069-f57ff887c55b)

176. Edinburgh to London

Travelling by train from Edinburgh to London, I passed a sign saying ‘London 150 miles’. After seven more miles, I passed another sign saying ‘Edinburgh 250 miles’.

How far is it by train from Edinburgh to London?

[SOLUTION] (#litres_trial_promo)

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