Question

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Price of 15 maths book is $825 and the price of 19 science book is $855. Jack buys 3 maths book and 2 science book, how much he has to pay?​

Answer 1

Answer: $ 255

Explanation:

Price of 15 maths book is $825

Price of 1 math book is =  $825/15 = $55

price of 19 science book is $855

price of 1 science book is =  $855/19 = $45

he pay for 3 maths and 2 science books =

3x55 + 2x45 = 165+90

= $ 255