If you're married with two children and with about £ 23 a week coming into the house you will already know all about the problems of spinning out money to make ends meet. And you are far from being alone in this-in fact, you're Mr. Average. The British national average wage is exactly ;E22 5s. 3d., the highest it's ever been. But this doesn'make you Midas, and living on it is nearly always a question of what can'be afforded, what has to go. How do you decide what it shall be? How do you sort out priorities? Man Alive looks at four families living their lives in very different ways and with only their pay-packet in common. When it comes to spending it they are poles apart, separated by attitudes and ambitions. Do you save, or live to the hilt? Would you consider HP? Is it moFe important to have a holiday or better clothes for your children? Can you ever own your own home? Is £ 23 a week a reasonable sum on which to bring up a family? What is the ' average ' life like?