Question

If 21y5 is multiple of 9, where y is a digit what is the value of y.

Answer 1

Answer:

Step-by-step explanation:

21y5 is multiple of 9

y is a digit

so,21 x 5 x y= 9's multiple

21 x 5 = 105

so 105x = 9's multiple

nearest 9's multiple is 630

which is divisible with 105

x = the divisible number

x = 70

the number is 630