Three friends go into a bookshop. Salma buysa cookbook and a novel. She pays AED 20.75. Isla buys the same novel and a dictionary. Her bill come to AED 26.65. Josh buys the cookbook and the dictionary and pays AED 30.90. What is the price of each book?

the answer is c

hope this !

step-by-step explanation:

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in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

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