RRB RPF RPSF SI and CONS Model Papers 1 with solutions

(d) Let the numbers be 10x and 10y where x and y are prime to each other.
∴ LCM = 10 xy
⇒ 10xy = 120 ⇒ xy = 12
Posssible pairs = (3, 4) or (1, 12)
∴ Sum of the numbers = 30 + 40 = 70