Select the correct answerA bag Contains 1, 2, 5 Rs coins in ratio 4:8:5 and total amount of 90.Rs. how many 5.Rs coins are there in that bag?Options8101215

To solve this problem, we first need to understand the ratio and total amount given.

The ratio of 1 Rs, 2 Rs, and 5 Rs coins is 4:8:5. This means for every 4 coins of 1 Rs, there are 8 coins of 2 Rs and 5 coins of 5 Rs.

The total amount in the bag is 90 Rs.

We can set up an equation to represent the total amount in the bag. Let's denote the number of 1 Rs coins as x, 2 Rs coins as y, and 5 Rs coins as z.

According to the ratio, we have:

x = 4k, y = 8k, z = 5k,

where k is a constant.

The total amount in the bag is represented by:

1x + 2y + 5*z = 90.

Substituting x, y, and z from the ratio equations, we get:

1*(4k) + 2*(8k) + 5*(5k) = 90, 4k + 16k + 25k = 90, 45k = 90.

Solving for k, we get k = 90/45 = 2.

Substituting k = 2 into z = 5k, we get z = 5*2 = 10.

So, there are 10 coins of 5 Rs in the bag.

Therefore, the correct answer is not in the options given.