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Mr. Kamau, a salesman is paid a commission of 6% on goods worth over sh. 600,000. In addition he is paid a monthly salary of sh. 35,000.
(a) Calculate his total earnings in a month when his total sales was sh. 750,000.
(b) In the following month, the rate of commission was changed to x% but his monthly salary remained the same. If Mr. Kamau received a total monthly earning of sh. 100,000 for selling goods worth the
same amount, find the value of x.
(c) If the rate of commission in (b) above was reduced in the ration 3:4 and his monthly salary increased by 10%, find the percentage change in his total monthly earnings for selling the same amount of goods