A wildlife reserve offers six types of annual membership to individuals. The charges are shown in the table below. Individual Membership Type Membership Charges per year,$ Friends of Bird Park 39 Friends of River Safari 65 Friends of the Zoo 105 Friends of Night Safari 105 Friends of Wildlife 145 Friends of Wildlife Plus 205 Of all the individuals who have taken up the annual membership, 20% hold Friends of Bird Park membership, 10% hold Friends of River Safari membership, 15% hold Friends of the Zoo membership, 25% hold Friends of Night Safari membership, 10% hold Friends of Wildlife membership and 20% hold Friends of Wildlife Plus membership. Assume no individual can hold more than one type of membership. The probability of observing the mean annual membership charges of a group of 30 members to be more than $105=______.Please fill in the blank.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
A wildlife reserve offers six types of annual membership to individuals. The charges are shown in the table below.
| Individual Membership Type | Membership Charges per year,$ |
| Friends of Bird Park | 39 |
| Friends of River Safari | 65 |
| Friends of the Zoo | 105 |
| Friends of Night Safari | 105 |
| Friends of Wildlife | 145 |
| Friends of Wildlife Plus | 205 |
Of all the individuals who have taken up the annual membership, 20% hold Friends of Bird Park membership, 10% hold Friends of River Safari membership, 15% hold Friends of the Zoo membership, 25% hold Friends of Night Safari membership, 10% hold Friends of Wildlife membership and 20% hold Friends of Wildlife Plus membership. Assume no individual can hold more than one type of membership.
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