Anna has 3 times as many toys as Mandy and 2 fewer toys than Amanda. If they have 142 toys all together, how many toys does Mandy have?
Please answer and provide answer explanation.
20
Let x be the number of toys Mandy has.

Anna has 3 * x toys.

Amanda has 3 * x + 2 toys.

x + 3 * x + 3 * x + 2 = 142.

7 * x + 2 = 142.

7 * x = 140.

x = 20.

.

Therefore, the answer is 20