At a greengrocer, two bananas and one apple cost £1.16 and one banana and one apple and one apple cost 0.71 How much does one apple cost?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.