Chemistry291

   1/36 Explanation: 1/72 divided by 1/2 =1/72 ÷ 1/2 (Translating) =1/72 × 2/1(Change of division sign and multiplied by the reciprocal fraction) =(1×2)/(72×1) [Multiply top to top and bottom to bottom numbers) =(1×2)/(36×2) Now reduce by canceling the common factor 2 =1/36 The answer for 1/72 divided by 1/2   is 1/36.

   10 1/2 Explanation: 3/4 divided by 1/14 =3/4 ÷ 1/14 (Translating) =3/4 × 14/1(Change of division sign and multiplied by the reciprocal fraction) =(3×14)/(4×1) [Multiply top to top and bottom to bottom numbers) =(3×7×2)/(2×2×1) Now reduce by canceling the common factor =(3×7)/(2×1) 【Cancel 2 from both sides】 =21/2 =21/2 This is a improper fraction.We need to change it as a mixed fraction.  =10 1/2 The answer for 3/4 divided by 21/2   is 10 1/2.

  24 Explanation: 3/4 divided by 1/32 =3/4 ÷ 1/32 (Translating) =3/4 × 32/1(Change of division sign and multiplied by the reciprocal fraction) =(3×32)/(4×1) [Multiply top to top and bottom to bottom numbers) =(3×8×4)/(4×1) Now reduce by canceling the common factor =(3×8×4)/(4×1)

  12 Explanation: 3/4 divided by 1/16 =3/4 ÷ 1/16 (Translating) =3/4 × 16/1(Change of division sign and multiplied by the reciprocal fraction) =(3×16)/(4×1) [Multiply top to top and bottom to bottom numbers) Now reduce by canceling the common factor =(3×4×4)/(4×1) 【Cancel 4 from both sides】 =(3×4)/1 =12 The answer for 3/4 divided by 1/16   is 12.