book Maths Puzzle Numerical Ability

7+7x7-7 divided by=
(the answers are.....13, 55, 7, or none of these)

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book Other Question

You have 25 pounds of wheat and 5 pounds of sugar. To bake each loaf of bread, you need to use 1.3 pounds of wheat and 0.5 pounds of sugar. To bake each muffin, you need 0.4 pounds An experienced carpenter can panel a room 3 times faster than an apprentice can. Working together they can panel the room in 6 hours. How long would it take each one working alone to do the job?