...to correspond with Inverse Proportion, and may be applied to both Simple and Compound. 14. If 6 men build a wall 20 feet long, 6 feet high and 4 feet thick, in 16 days, working 12 hours in a day, in how many days will 24 men build a wall 200 feet long, 8 feet...

...as explained above—two distinct proportions ; the combination of which ma matter of convenience, rather than of scientific accuracy. RULE. Make that...high, and 6 feet thick ? Here the answer sought men 24 : 8") , is days. We, therefore, length 20 : 200 I "' place 12 days for the third height 6 : 8 J : term,...

...wall, how many men'will build four times as much in a fifth part of the time ? Ans. 600. 13. If 6 men build a wall 20 feet long 6 feet high and 4 feet thick in 16 days, in what time will 24 men build one 200 feet long 8 feet high and 6 feet thick ? men. da. ft....

...which is fs = |. Thus, 117^-i Xi = 117-^i=tFXS = 9«6=104 Ans. 2. If 6 men, in 16 days of 9 hours each, build a wall 20 feet long, 6 feet high, and 4 feet thick, in how many days of 8 hours each, will 24 men build a wall 200 feet long, 8 feet high, and 6 feet thick...

...pounds, what will a bar weigh, ihat is 6ft. long, 4 in. broad, and 2 in. thick? 50. If 6 men built a wall 20 feet long, 6 feet high, and 4 feet thick, in 16 days, in how many days will 24 men build a wall 200 feet long, 8 feet high, and 6 feet thick ? 51...

...what principal will gain 6 dollars in 12fcnonths ? Ans. 105 dollars. 13. If 8 men can build a wall,"20 feet long, 6 feet high, and 4 feet thick, in 12 days, in what time can 24 men build one, 200 feet long, 8 feet high, and 6 feet thick ? Ans. 80 days. days, by 145 men;...

...simple ratios. The following sum may serve as an illustration : If 3 men, in 16 days, of 9 hours each, build a wall 20 feet long, 6 feet high, and 4 feet thick, in how many days, of 8 hours each, will 13 men build a wall 200 feet long, 8 feet high, and 6 feet thick...

...273 by 13 and by 7, or by their product, 91, 1 : 12 1 :10 > 3 : x — 360, by inspection. 2. If 6 men build a wall, 20 feet long, 6 feet high, and 4 feet thick, in 16 days, in what time will 24 men build one, 200 feet long, 8 feet high, and 6 feet thick ? 24 : 6...

...—2 —8 | 12— 4— i 100— 10 per cent. Ans. 1 1 0— 20— —51 4— —400 75 5712— 112 70. If 8 men can build a wall 20 feet long, 6 feet high,...will 24 men build one 200 feet long, 8 feet high, 6 feet thick ? —20 —6 —4 —3 —24 20 0— 8— 4 6— ! 12— 4— | 80 Ans. 71. Suppose 12...

...4ft. high, may be treated as one magnitude ; 20X8X4, making a cube. 2. Illustrations. (1.) If 6 men build a wall 20 feet long, 6 feet high, and 4 feet thick, in 9 days, working 10 hours a day, in what time will 24 men build one 200 feet long, 8 feet high, and...