Question

find LCM of 2.5,0.5, 0.175

Answer 1

Solution :-

L.C.M. of 2.5, 0.5 and 0.175

The L.C.M. of two or more fractions = L.C.M. of numerators/H.C.F. of denominators

First of all remove the decimals and convert these into fractions.

2.5 = 25/10
0.5 = 5/10
0.175 = 175/1000

Now, first we will find the L.C.M. of numerators.
L.C.M. of 25, 5 and 175

25 = 5*5
5 = 5
175 = 5*5*7
= 5*5*7
= 175
L.C.M. of 25, 5 and 175 = 175

Now, we will find out the H.C.F. of denominators. 
H.C.F. of 10, 10, 1000
10 = 2*5
10 = 2*5
1000 = 2*2*2*5*5*5
H.C.F. of 10, 10 and 1000 = 2*5 = 10

Thus,
L.C.M. of Numerators/H.C.F. of denominators
= 175/10
= 17.5

Therefore, L.C.M. of 2.5, 0.5 and 0.175 is 17.5

Answer.

Answer 2

ANSWER:

LCM of rational number =LCM of numeratorsHCF of denominators

Numbers are 2510,510,1751000

Now, 25 = 5×5; 5 = 5×1; 175 = 5×5×7

LCM of (25, 5, 175) = 5×5×7 = 175

Also,

10 = 2×5; 1000 = 2×2×2×5×5×5

HCF of (10,10,1000) = 10

LCM of (2.5, 0.5, 0.175) =17510=17.5

HOPE IT WILL HELP YOU