Question

p's is increased by 10% over last year and will be 20% higher next year if his last year income is rupees 7,000 per month, what will it be the next year

Answer 1

Answer:

The income for next year is 9240 rs per month

Step-by-step explanation:

Given that p's is increased by 10% over last year

   let the the initial income in last year  100

  the p's is increased by 10%

                             ⇒ the amount increase = $\frac{10}{100} (100)$ = 10

 the total income = 100+10= 110  

 next year the p's increment percentage = 20%

⇒ the amount of increment for 110 =   $\frac{ 20}{ 100} ( 110)$ = 22

     the total income =   110+ 22 = 132

              initial    last year  next year

                 100         110         132   which will be the ratio of p's increment

                              7000        ?

          ⇒  110 : 132 : : 7000: ? are in direct proportion

         ⇒ $(\frac{ 110}{ 7000} ) = ( \frac{132}{x} )$    ⇒  x =$\frac{132 (7000)}{100}$ =  9240

            9240 is the income for next year per month