the ratio of the zinc and copper in an alloy is 7:9 in the weight of copper in the alloy is 11.7 kg. find the weight of zinc in it
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7x+9x=11.7
16x=11.7
x=11.7÷16
x=0.731
7x=7×0.731 =5.117
9x=9×0.731=6.579
please make it brainliest
16x=11.7
x=11.7÷16
x=0.731
7x=7×0.731 =5.117
9x=9×0.731=6.579
please make it brainliest
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