Find the principal amount if its interest in
3 months with 5% per annum is Rs 66.​

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

What is the value of x when x + 7 = 21?