10 pesos = .909198 US dollars. Use estimation and rounding to find out how many US dollars equal 200 pesos.

B) how many pesos approximately are 4 US dollars?

200 / 10 = 20

200 pesos = about $19.00

I'll be glad to check your answer for B).

B) 10x 4 = 40

Right.

To estimate how many US dollars equal 200 pesos, we can use the given exchange rate of 10 pesos = 0.909198 US dollars.

Step 1: Determine the ratio between pesos and US dollars.
10 pesos = 0.909198 US dollars

Step 2: Calculate the ratio of pesos to US dollars.
1 peso = 0.909198 / 10 US dollars

Step 3: Calculate the estimated amount of US dollars for 200 pesos by multiplying the ratio by 200.
200 pesos * (0.909198 / 10 US dollars) = approximately 18.182 US dollars

So, approximately 200 pesos is equal to 18.182 US dollars.

To find out approximately how many pesos are equal to 4 US dollars, we can use the same method:

Step 1: Determine the ratio between pesos and US dollars.
10 pesos = 0.909198 US dollars

Step 2: Calculate the ratio of US dollars to pesos.
1 US dollar = 10 / 0.909198 pesos

Step 3: Calculate the estimated amount of pesos for 4 US dollars by multiplying the ratio by 4.
4 US dollars * (10 / 0.909198 pesos) = approximately 43.968 pesos

So, approximately 4 US dollars is equal to 43.968 pesos.