In 2013, Mary worked for Company A. Her salary for the year was $18750. The rate of exchange between pounds (£) and Indian rupees (R) is £1 = R87.21. The rate of exchange between pounds (£) and Swiss francs (F) is £1 = F1.53.

1. (a)(i)$5625 of her salary was not taxed. What percentage of her salary was not taxed?[2]
2. (a)(ii)The remaining $13125 of Mary's salary was taxed. 22% of this amount was deducted for tax. Mary's take-home pay was the amount remaining from $18750 after tax had been deducted. She received this in 52 equal amounts as a weekly wage. Calculate Mary's weekly wage.[3]
3. (a)(iii)In 2012 Mary had worked for Company B. When she moved from Company B to Company A, her salary increased by 25% to $18750. Calculate her salary when she worked for Company B.[2]
4. (b)(i)Mavis changed £750 into Indian rupees. How many rupees did she receive?[1]
5. (b)(ii)David changed F450 into pounds. How many pounds did he receive?[1]
6. (b)(iii)Brian changed R50000 into Swiss francs. How many Swiss francs did he receive?[2]