17. 77. TROY WEIGHT. Explanation. I borrow 24 in grains, which added to 3 make 27, then 21 from 27, and 6 remain to be put down; carry 1 to 17 are 18, then 18 from 2 I cannot; borrow 20 to the 2 make 22, then 18 from 22, and 4 remain to put down; carry 1 to 8 are 9, then 9 from 1 I cannot; borrow 12 to the 1 make 13, then 9 from 13, and 4 remain to put down; carry 1, and proceed as in simple subtraction. 88. PROMISCUOUS EXAMPLES FOR PRACTICE. 73. Lent a tradesman 150l. 10s. and received of him in part 741. 19s. Sd.; what sum remains due to me? Ans. 75l. 10s.3d.. 74. Borrowed of a friend 1000l. and have since returned in part 2341. 5s. 6d. ; what sum do I still owe him? Ans. 765l. 14s. 6d. 75. The amount of a person's property is 4051. 1s. 2d.4, out of which he owes 1781, 11s. 9d.; what will he be worth when his debts are paid? Ans. 2261. 9s. 4d.ž. 76. My yearly income is 5671. 12s. 8d. out of which I spend 390l. 18s. ld.; how much do 1 lay up? Ans. 176l. 14s. 6d.ý. 77. An adventurer purchased a lottery ticket for 271. 16s. 10d. his ticket came up a prize of 500l.; what sum did he gain? Ans. 4721. 3s, 2d. |