three numbers are in the ratio 3 : 4 : 5 and their l . c . m . is 2400 . their h . c . f is ?
"let the numbers be 3 x , 4 x and 5 x their l . c . m . = 60 x 60 x = 2400 x = 40 the numbers are 3 * 40 , 4 * 40 , 5 * 40 hence required h . c . f . = 40 answer is c"
add(multiply(multiply(3, 5), const_100), multiply(4, 5))