27.—(1) Where the income of the individual consists, wholly or partly, of a wage or salary from employment, there must be deducted—
(a)the sum of £45 per month; and
(b)where it would be reasonable to do so, an amount to provide for the care of any dependent child living with the individual during the time that individual is absent from home by reason of their employment.
(2) Where the income of the individual consists, wholly or partly, of income from a trade, business or gainful occupation other than an occupation at a wage or salary, there must be deducted, where it would be reasonable to do so, an amount to provide for the care of any dependent child living with the individual during the time that individual is absent from home whilst the individual is engaged in that trade, business or gainful occupation.