Question

find the greatest number that will divide 140, 170, 155 leaving remainder 5 in each case​

Answer 1

Answer:

15

Step-by-step explanation:

140–5 = 135

170–5 = 165

155–5 = 150

Factors of

135 = 3x3x3x5

165 = 3x5x11

150 = 2x3x5x5

HCF = 3x5 = 15.

So, the greatest number which on dividing 140, 170, or 155, leaves 5 as a remainder in each case is 15.