Page 226 - Start Up Mathematics_5

Chapter 9: Time, Temperature and Money Exercise 9.5

Let’s Recall This exercise should be done by students on their own.
1. (a) Sneha started doing her homework at 5:30 p.m. Let’s Evaluate
(b) Dr Pathak left for his clinic at 8:00 a.m. 1. (a) 13 h 13 min 40 s (b) ` 6,848.41
(c) 13 h 57 min 13 s
2. (a) 960 seconds (b) 9,300 seconds
2. (a) 3 h 37 min 37 s (b) ` 3,108.33
(c) 1,875 paise (d) ` 0.46 (e) 15:15 hours
3. (a) 85 h 35 min (b) ` 77,680.66
(f) 4:40 p.m.
(c) 348 h 4 min
3. 8 h 45 min 4. 4 h 15 min 5. 11 hours 4. (a) ` 35.91 (b) ` 46.79 (c) 728.65
Exercise 9.1 5. Bill No. _________
1. (a) 15 h 55 min (b) 21 h 36 min
(c) 13 h 1 min 1 s (d) 17 h 23 min 15 s Date: _____________
(e) 21 h 56 min 8 s (f) 40 h 12 min 7 s S. Item Quantity Price Amount
(g) 16 h 47 min (h) 11 h 40 min 50 s No. (in `) ` p
(i) 41 h 49 min 39 s (j) 13 h 16 min 3 s 1. Scarves 5 175.00 875.00
2. (a) 8 h 27 min (b) 2 h 54 min 2. Pair of jeans 3 525.00 1,575.00
(c) 8 h 8 min 17 s (d) 7 h 45 min 48 s.
(e) 6 h 28 min 38 s (f) 12 h 39 min 52 s 3. T-shirts 4 225.00 900.00
(g) 7 h 45 min (h) 7 h 51 min 41 s Total 3,350.00
(i) 7 h 16 min 50 s (j) 7 h 15 min 48 s
3. (a) 18 h 16 min (b) 77 h 44 min Money left with Honey = ` 1,650
(c) 31 h 30 min 25 s (d) 110 h 43 min 30 s 6. Time was 4:10 p.m.
(e) 28 h 6 min 39 s (f) 57 h 47 min 48 s 7. (a) 197.6°F (b) 181.4°F (c) 91.6°C (d) 58.8°C
Exercise 9.2 8. 43°C 9. 11°C
1. 2 h 15 min 2. 4 h 30 min or 4½ h 3. 28 h 10. (a) (iii) (b) (ii) (c) (iv)
4. 38½ h 5. 5 h 35 min Values and Life Skills
6. (a) 3 h 22 min (a) 4 hours (b) ` 1,550
(b) 1 h 20 min, No he will take 3 minutes more. Scratch Your Brain
Exercise 9.3 1. (a) 7:35 (b) 1:05 (c) 4:25 (d) 9:30
1. (a) 59°F (b) 82.4°F (c) 87.8°F 2. 18:50 hours
(d) 107.6°F (e) 129.2°F (f) 145.4°F
(g) 165.2°F (h) 185°F (i) 197.6°F Chapter 10: Profit and Loss and Unitary Method
(j) 86°F
Exercise 10.1
2. (a) 2.2°C (b) 8.9°C (c) 36.1°C
(d) 40.5°C (e) 44.4°C (f) 51.1°C 1. Onion: Profit = ` 3, Potato: S.P. = ` 11
(g) 68.3°C (h) 89.4°C (i) 98.3°C Tomato: C.P. = ` 19, Broccoli: S.P. = ` 17
(j) 100°C Cabbage: C.P. = ` 22, Lemon: S.P. = ` 42
Exercise 9.4 2. ` 400 3. Profit = ` 130 4. Profit = ` 1,07,500
1. (a) ` 1,605.15 (b) ` 4,616.35 (c) ` 9,045.12 5. ` 75 6. ` 67.50 7. ` 10,200
(d) ` 46,778.24 (e) ` 24,568.84 (f) ` 2,020.96
2. (a) ` 144.62 (b) ` 3,668.42 (c) ` 34,047.09 Exercise 10.2
(d) ` 1,907.76 (e) ` 25,508.47 (f) ` 7,918.31 1. ` 630 2. ` 783.75 3. 8 hours
3. (a) ` 702.45 (b) ` 1,754.48 (c) ` 16,332.84 4. ` 284 5. ` 1,437.50 6. ` 107.40
(d) ` 12,428.50 (e) ` 78,919.20 (f) ` 46,621.08 Let’s Evaluate
4. (a) ` 34.26 (b) ` 84.29 (c) ` 74.61 1. ` 5,350 2. Loss = ` 3,650 3. Profit = ` 3,26,750
(d) ` 51.78 (e) ` 391.24 (f) ` 74.21 4. ` 22,968 5. ` 98.875
5. ` 5,348.20 6. ` 42.75 7. ` 227.10 6. Ravi bought the items cheaper.
8. ` 11,610.75 9. ` 349 10. ` 165 7. 104 story books

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