Mr wong spent a total of $176 on a jacket a belt and a wallet. the wallet cost $31 more than a belt. the jacket cost 3 times as much as the belt. how much did the wallet cost?

 The required cost of the wallet is $60.

Step-by-step explanation:  Given that Mr Wong spent a total of $176 on a jacket a belt and a wallet.

The wallet cost $31 more than a belt and the jacket cost 3 times as much as the belt.

We are to find the cost of the wallet.

Let x, y and z represents the cost of the jacket, the belt and the wallet respectively.

Then, according to the given information, we have

Substituting the values of z and x from equations (ii) and (iii) in equation (i), we get

From equation (ii), we get

Thus, the required cost of the wallet is $60.