“(1) It must be reasonable and equitable; (2) It must be necessary to give business efficacy to the contract so that no term will be implied if the contract is effective without it; (3) It must be so obvious that it goes without saying; (4) It must be capable of clear expression; (5) It must not contradict any express terms of the contract.”
“(a) The hours of labour and the price of labour which would be charged by the First/Second Defendant would be reasonable. (b) The amount of materials and the price of materials by the First/Second Defendant (sic) would be reasonable. (c) Reasonable care and skill would be employed by the First/Second Defendant in performing the relevant works. (d) The Claimants would pay a reasonable price for the work done by the First/Second Defendant. (e) The invoices of the First/Second Defendant would be accurate and represent sums due and owing.”