self Maths Puzzle

The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:

A. 279 B. 283
C. 308 D. 318

Read Solution (Total 1)

one formula is there:
Product of two numbers = Product of their H.C.F. and L.C.M.
Here, LCM, HCF, and one of that no. is gn
Let's take unknown no as x.
x*275=11*7700
So,x=(11*7700)/275=308
12 years agoHelpfull: Yes(3) No(0)

self Other Question

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ?

A. 26 minutes and 18 seconds
B. 42 minutes and 36 seconds
C. 45 minutes
D. 46 minutes and 12 seconds .
The ratio of two numbers is 3 : 4 and their H.C.F. is 4. Their L.C.M. is:

A. 12 B. 16
C. 24 D. 48
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