Question

0.55除以十分之七加上45%乘以七分之十等于多少？

Answer 1

0.55÷10分之7+45%×7分之10
=0.55÷（7/10）+0.45×10/7
=0.55×10/7+0.45×10/7
=10/7×（0.55+0.45）
=10/7×1
=10/7
=7分之10