: John is age 65, vested, and has 25 years of pension credits at the time of his retirement. During his last 1,200 hours of work prior to his retirement, John's local collective bargaining agreement called for contributions of $.60 per hour and $.75 per hour. John worked under the $.60 rate for 400 hours and under the $.75 rate for 800 hours. The weighted average contribution rate upon which John's pension is based is calculated as follows:
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