Question

What will answer of 4,5,6​

Answer 1

Ans 4 - see photo 1 Ans 5 - see photo 2 Ans 6- Let the no. be x...

Then,

x/8 + x/12 + x/20 = 31

So,

(15x + 10x + 6x)/120 = 31

So,

31x/120 = 31

Hence,

x = 31 * 120/31

= 120....