Question

how many tens should be added in the result after subtracting 10 units from 42 tens for getting sum 5 hundred ?

Answer 1

9 tens should be added bcuz 42 tens means 420.After subtracting 10 units i.e. 420-10=410.as sum should be 500 therefore 500-410=90 i.e. 9 tens should be added.

Answer 2

Answer:

9 tens should be added to the result after subtracting 10 units from 42 tens for getting the sum five hundred.

Step-by-step explanation:

Given : The result after subtracting 10 units from 42 tens for getting the sum five hundred.

To find : How many tens should be added to the result?

Solution :

Let the tens be x,

According to question,

x\times10+42\times10-10=500x×10+42×10−10=500

10x+420-10=50010x+420−10=500

10x+410=50010x+410=500

10x=9010x=90

x=9x=9

Therefore, 9 tens should be added to the result after subtracting 10 units from 42 tens for getting the sum five hundred