problems 7,17,19,21,23,&25. show all work. thank u

36 5 . 48 144 6. 16 12 7 A driver gear has 36 teeth and makes 85.0 rpm. Find the rpm of the driven gear with 72 teeth. 8. T having 54 teeth. Find the speed . the driven gear if it has 45 teeth. 9. A gear running at 250 rpm meshes with another revolving at 100 rpm. If the smaller gear has 30 teeth, how many teeth does the larger gear have? 10. A driver gear with 40 teeth makes 154 rpm. How many teeth must the driven gear have if it makes 220 rpm? 11. Two gears have a speed ratio of 4.2 to 1. If the smaller gear has 15 teeth, how many teeth does the larger gear have? 12. What size gear should be meshed with a 15-tooth pinion to achieve a speed reduction of 10 to 3? 13. A driver gear has 72 teeth and makes 162 rpm. Find the rpm of the driven gear with 81 teeth. 14. A driver gear with 60 teeth makes 1600 rpm. How many teeth must the driven gear have if it makes 480 rpm? 15. What size gear should be meshed with a 20-tooth pinion to achieve a speed reduction of 3 to 1? 16. A motor turning at 1500 rpm is fitted with a gear having 60 teeth. Find the speed of the driven gear if it has 40 teeth. 17. The larger of two gears in a clock has 36 teeth and turns at a rate of 0.50 rpm. How many teeth does the smaller gear have if it rotates at 1/30 rev/s? 18. How many revolutions does an 88-tooth gear make in 10.0 min when it is meshed with a 22-tooth pinion rotating at 44 rpm? 19. If gear A turns in a clockwise motion, determine the motion of gear B in each gear train. 20. A 21. A 22. A D B C C B 23 C C B 24. D A A 25. F D E A