Maria wants to find the product of 5 3/20 multiplied by 3 4/25 using decimals instead of fractions how can she rewrite the problem using decimals

Step-by-step explanation:

Maria wants to find the product of multiplied by

First we change mixed fraction to fraction and then change into decimal.

#First fraction:  

#Secondfraction:  

Now we find the product of both decimal

Using calculator product of 515 and 316 = 162740

Both number has decimal digits two

So, total number of decimal digits is 4

In multiply result write decimal before 4 digits from right.

Therefore,

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9