Question

帮忙做下数学题

数字A和B每个都有3位数。 罗宾要算A乘B 然而他把A放到B的左边组成一个6位数D。 他的答案(即D)是正确答案的6倍 求A 和B

原题是这样的：The numbers A and B each have 3 digits. Robin was asked to caculate A * B. Instead he put A on the left of B to form a six-digit number D. His answer was six times the correct number. Find A and B.

感谢

Answer 1

由题意可以列出A*1000+B=D 6A*B=D 整理得到B=(1000A)/(6A-1)

Answer 2

放到左边后即1000A+B
1000A+B=6AB
1000A=6AB-B=(6A-1)B
B=1000A/(6A-1)