Harry owes the bank money. To repay his debt, he paid / $150$150 back to the bank each month. After 1010 months, his remaining debt was / $6900$6900.

is it asking how many months he still has to pay

The original dept : $8400

Step-by-step explanation:

Allow me to revise your question and hope it will fit the original one with one additional information:

Harry owes the bank money. To repay his debt, he paid $150 back to the bank each month. After 1010 months, his remaining debt was $6900. What is his original dept.

My answer:

Given:

Payment per month: $150 After 10 months, his remaining dept is:$6900

The total amount he has already paid:

$150 * 10 = $1500

The original dept:

Remaining dept + Paid Amount

=$6900 + $1500

= $8400

Hope it will find you well.