Question

5 men can paint hall in 18 hours how many men will be able to paint it in 10 hours please solve it by unitary method

Answer 1

total painting work = 18×5 = 90 unit

let x men can complete it in 10 hrs

x ×10 = 90 ; x = 9 men

Answer 2

Given sp=220 and loss=12%

so, the CP = (220*100)/88 =250 Rs

now the new profit is 10% and cp is 250 Rs

and we have to find by how much amount as compared to earlier the SP will be more so as to gain profit of 10%.

so SP= (250*110)/100 =275 Rs

now increase in amount= 275–220 = 55 Rs