If 28a+30b+31c=545.
then a+b+c=?.a,b,c are natural numbers	Choose the correct answer
A) 12	B) 14	C) 8	D) 25	E) 18
have a look on your calender   since,we all knw a year consist of 365 days   february is d only month which has 28 days   4 months in a year has 30 days   and,rest 7 months has 31 days..   so,following d given eq. we can write 28*1 + 30*10 + 31*7..   hence values of a,b and c are 1, 10 and 7 respectively..   a+b+c=18   ANSW18R:18
<result>E</result>
If 28a+30b+31c=545.
then a+b+c=?.a,b,c are natural numbers