Let m represent the marked price, s represent the price at which the product is sold, p represent the profit amount, and c represent the cost price. We have these relationships.

s - p = c

p/s = 4%

We want to find the ratio of m to c.

We can solve the third equation for p and substitute that into the second equation.

s - (4%*s) = c

s(1 - 4%) = c

s = c/(1 - 4%)

Now, we can substitute this into the first equation and solve for m/c

m(1 - 10%) = c/(1 - 4%)

m/c(1 - 10%) = 1/(1 - 4%)

m/c = 1/((1 - 4%)(1 - 10%))

m/c = 1/(.96*.90) = 1/.864

m/c ≈ 1.157407...

We are actually interested in

(m-c)/c = m/c - 1 ≈ .157407...

Multiplying this by 100%, we get

The marked price exceeded the cost price by

**m(1 - 10%) = s**s - p = c

p/s = 4%

We want to find the ratio of m to c.

We can solve the third equation for p and substitute that into the second equation.

**p = 4%*s**s - (4%*s) = c

s(1 - 4%) = c

s = c/(1 - 4%)

Now, we can substitute this into the first equation and solve for m/c

m(1 - 10%) = c/(1 - 4%)

m/c(1 - 10%) = 1/(1 - 4%)

m/c = 1/((1 - 4%)(1 - 10%))

m/c = 1/(.96*.90) = 1/.864

m/c ≈ 1.157407...

We are actually interested in

(m-c)/c = m/c - 1 ≈ .157407...

Multiplying this by 100%, we get

The marked price exceeded the cost price by

**15.7407...%**.