00:01
Hello, let's have a look on the question.
00:02
So let the army hold the equipment for x years, for x years, then rebate on the equipment, then rebate on the equipment is equal to 2 ,000 multiplied by 1 minus 0 .20 hold to the power x.
00:44
So this will be equal to multiplied by 0 .80 to the power x.
00:51
And the maintenance cost after x years, after x years will be equal to thousand, multiplied by 1 plus 1 point, this is 0 .18 whole to the power x.
01:14
So this will be equal to thousand multiplied by 1 .18 whole to the power x.
01:20
As per question, we have 2 ,080 ,000 multiplied by 0 .80 -0 hold to the power x is equal to 1 ,000 multiplied by 1 .18 hold to the power x.
01:37
So according to the question, these values are same.
01:39
So from here we can find out that is 1 .18 whole to the power x divided by 0 .80 whole to the power x is equal to 28, that is 2 .88 ,000 divided by 1 ,000.
01:57
0s will get cancelled out.
01:59
So from here we can find out the value of x that will be 1 .18 divided by 0 .80 whole to the power x is equal to 280...