Here,
Let the mass of sand be "x"
Mass of 1st beaker be "y"
Mass of 2nd beaker be "z"
Then
Mass of sand + beakers = "x+y+z=117.8120\\ \\ \\ \\ .......(1)"
Similarly,
"x+y=116.7434 \\ \\ \\ \\ \\ .....(2)\\\\ x+z=117.4350\\ \\ \\ \\ \\ .........(3)"
Putting the value of (3) in (1)
We get,
"y=0.3770"
Putting the value of y in (2)
We get,
"x=116.3664"
Putting the value of x in (3)
We get ,
"z=1.0686"
Total mass = "117.8120"
Mass percentage of sand
"=\\frac{116.3664\u00d7100}{117.8120}=98.773\\ \u2105"Mass percentage of beaker 1 =
"=\\frac{0.3770\u00d7100}{117.8120}=0.32\\ \u2105"Mass percentage of beaker 2
"=\\frac{1.0686\u00d7100}{117.8120}=0.907\\ \u2105"
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