Meihua has 4 times as many storybooks as Maria. She has 135 more storybooks than Maria. How many storybooks do they
have altogether?
(1) 205
(2) 225
(3) 235
(4) 315

225 altogether.

Step-by-step explanation:

Let x represent Meihua's number and y represent Maria's number of books.

4x = y and x + 135 = y

Substitute and solve for x

4x = x + 135 Subtract x from both sides.

3x = 135. Divide both sides by 3.

x = 45 That's how many Meihua has. Then figure Maria's number by substituting 45 in place of x in the original equations.

4(45) = y. And 45 + 135 = y

In both, y = 180.

x + y = total altogether

45 + 180 = 225

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