Mathematics
Ranjan Singh makes statues of brass. Brass is an alloy of copper and zinc. Ranjan uses two varieties of brass for different kinds of statues. Variety 1 contains copper and zinc mixed in the ratio 7 : 4 and variety 2 contains these metals in the ratio 5 : 3. Ranjan makes an elephant statue from variety 1 and a horse statue from variety 2. The elephant statue weighs 176 g and it is known that the brass used in the horse statue contains 135 g zinc.
(1) Find the quantity of copper present in the brass used to make the elephant statue.
- 98 g
- 112 g
- 121 g
- 132 g
(2) How much copper is contained in the brass used to make the horse statue ?
- 165 g
- 175 g
- 205 g
- 225 g
(3) How much zinc is contained in the brass used to make the two statues ?
- 169 g
- 179 g
- 189 g
- 199 g
(4) The ratio of the quantities of copper and zinc used to make the two statues is :
- 113 : 98
- 337 : 148
- 221 : 199
- 337 : 199
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