the l . c . m . of 2 numbers is 40 . the numbers are in the ratio 4 : 5 . find their sum ?
"let the numbers be 4 x and 5 x l . c . m . = 20 x 20 x = 40 x = 2 the numbers are = 8 and 10 required sum = 8 + 10 = 18 answer is a"
add(multiply(divide(2, multiply(40, 4)), 4), multiply(divide(2, multiply(40, 4)), 40))