( 1).24÷50=0.48=48%
A: The number of girls accounts for 48% of the class.
(2).26÷50=0.52=52%
The number of boys accounts for 52% of the class.
(3).24÷26≈0.923=92.3%
A: The number of girls is 92.3% of the number of boys.
2.
8÷ 1 1≈0.727=72.7%
A: The speed of artificial earth satellite is 72.7% of that of spacecraft.
3.
A: 46/50 = 0.92 = 92%.
B: 27 ÷ 30 = 0.9 = 90%
90%