A certain ore, when refined, yields an average of 1.25 pounds of metal to the ton. The number of tons of ore that will be needed to yield 200 pounds of metal is...
A) 40
B) 80
C) 160
D) 200
E) 250
I need to know how to find the answer!!! THANK U!!!
2006-10-20 10:32:38 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1.25 lbs/1 ton =200 lbs/ x tons
Cross multiply
200=1.25x
200/1.25= x
160=x
2006-10-20 10:41:06 · answer #1 · answered by acdshottie 2 · 3⤊ 0⤋
I .25 pound of metal per ton of ore
to obtain 200 pound of metal
you will need 200 / 1.25 = 160 ton of ore
Thus answer is C
2006-10-20 18:03:25 · answer #2 · answered by Abhay L 1 · 0⤊ 0⤋
200 lb/1.25lb/t=160 t
2006-10-20 18:27:34 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
Maybe E. 250... maybeee
2006-10-20 17:41:51 · answer #4 · answered by rozha194 1 · 0⤊ 0⤋
200 / 1.25 = 160
C
2006-10-20 17:41:24 · answer #5 · answered by Alan 7 · 0⤊ 0⤋