If 28a+30b+31c=545. then a+b+c=?.a,b,c are natural numbers
If 28a+30b+31c=545.
then a+b+c=?.a,b,c are natural numbers
Answer/Solution
18
Steps/Work
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
ANSWER:E
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
ANSWER:E