8. (£2000 × 4+£6000 × 2): £(6000 × 2) :: £1000 : Ans. required. 50×6+60 × 8+90 × 4= (50+60 +90) × equated time in 9. months; 10. 100 × 6+300 × 12+ 400 × 24+ 400 x no. of months required=1200 × 231; .. 400 × no. of months required=28200 - (600+ 3600+9600) =14400; ... no. of months required=36, or 3 years. EXCHANGE.-Ex. XV. Page 80. 1. £1: £3753 :: 25·4 fr.: no. of francs required; (108 ..1085 thalers, 20 silver groschen = £ (1085 × 3.71 25.21 £159. 15s. 57483d. £159. 15s. 5d, nearly. 9 × 1170 16 x 25-35 £25. 19s. 2 d. 19. (7) 12 at 2s. 9 d. (8) (9) 18. × 11+ 3d. × 3 = 11s. 9d. 1s. x 17=178. 1s. × 33 + 3d. x3=£1. 138. 9d. 12 at 7s. 04d. = 1s. x 84+ 3d. x 1=£4. 4s. 3d. 12 at 15s. 111d. = 1s. × 191 + 3d. × 1 = £9. 11s. 3d. (10) 12 at 19s. 84d. 1s. × 236 + 3d. × 2= £11. 16s. 6d. 2. (1) 24 at 3s. 44d.=2s. × 40+ 6d. × 2 = £4. 18. (2) 24 at 11s. 10ąd. = 2s. × 142 + 6d. × 3 (3) (4) =£14. 4s.+1s. 6d. = £14. 58. 6d. 24 at 16s. 03d. 2s. × 192 + 6d. × 2 = 24 at 12s. 13d. 2s. × 145+ 6d. × 3 £14. 10s. +1s. 6d. =£14. 11s. 6d. (4) 85 at 12s. 11d.=(12 at 12s. 11d.) × 7+1 at 12s. 11d, = (£7. 4s. + 1s. × 11) × 7+12s. 11d. =(£7. 158.) × 7+12s. 11d. =£54. 5s.+ 12s. 11d. = = £54. 178. 11d. (5) 144 at 38. 61d. (12 at 3s. 61d.) × 12 =(£1. 16s. + 6s. + 3d.) × 12 =(£2. 2s. 3d.) × 12 = £25. 7s. (6) 153 at 48. 54d. = (12 at 4s. 54d.) × 12+9 at 48. 5d. =(£2. 88. + 58. +6d.) × 12+ £2. 08. 13d. =(£2. 13s. 6d.) × 12+ £2. 0s. 14d. =(£2. 13s.) × 12+ 6s. + £2. Os. 14d. = = £31. 16s. + 6s. +£2. 0s. 11⁄2d. =£34. 2s. 1d. (7) 39 at 83d.=(12 at 83d.) × 3+3 at 83d. =(8s. 9d.) × 3+28. 2 d. =£1. 6s. 3d.+2s. 24d. (8) 57 at 78. 9d. (12 at 7s. 9d.) × 4+9 at 7s. 9d. =(£4. 4s. + 9s.) × 4 + £3. 9s. 9d. £18. 128. + £3. 98. 9d. = £22. 1s. 9d. (9) 72 at 178. 04d. (12 at 17s. 0‡d.) × 6 = =(£10. 4s.+3d.) × 6 (10) 144 at 138. 10d. (12 at 138. 10d.) × 12 =(£7. 16s.+108. +6d.) × 12 = £99. 188. (11) 94 at 8s. 6d. (12 at 8s. 61d.) × 7+10 at 8s. 6d. = |