Android : LinearLayout WeightSum not working as expected

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/MasterLayout"
android:orientation="vertical"
android:background="#ffffff"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:weightSum="40">
<View
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="2"
    android:background="#ff0ff000"
    android:visibility="visible" />
<TextView
    android:id="@+id/Name"
    android:text="James Madison"
    android:layout_gravity="center"
    android:textColor="#4b8dcf"
    android:textSize="24dp"
    android:layout_height="0dp"
    android:layout_weight="3"
    android:layout_width="fill_parent"
    android:background="#ff0ff000" />
<ImageView
    android:id="@+id/Image"
    android:layout_width="wrap_content"
    android:layout_height="0dp"
    android:layout_weight="10"
    android:layout_gravity="center"
    android:src="@drawable/pro1" />
<TextView
    android:id="@+id/Title"
    android:text="Lead Civil Engineer"
    android:textColor="#4b8dcf"
    android:layout_gravity="center"
    android:textSize="16dp"
    android:layout_height="0dp"
    android:layout_weight="1.5"
    android:layout_width="wrap_content"
    android:background="#00000000" />
<TextView
    android:id="@+id/Company"
    android:text="Telco Corp"
    android:textColor="#4b8dcf"
    android:layout_gravity="center"
    android:textSize="16dp"
    android:layout_height="0dp"
    android:layout_weight="1.75"
    android:layout_width="wrap_content"
    android:background="#00000000" />
<TextView
    android:id="@+id/Pitch"
    android:text="Engineer specializing in bridge construction and maintenance. Looking for mechanical engineers and designers to work on an exciting new project."
    android:textColor="#A7A9AB"
    android:layout_marginLeft="20dp"
    android:layout_marginRight="20dp"
    android:gravity="center"
    android:textSize="16dp"
    android:layout_height="0dp"
    android:layout_weight="10"
    android:layout_width="wrap_content"
    android:background="#00000000" />
<View
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:visibility="invisible" />
<LinearLayout
    android:id="@+id/TagMasterLayout"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="5">

    <LinearLayout
        android:id="@+id/TagLayout"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <ImageView
            android:id="@+id/user"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_marginLeft="5dp"
            android:gravity="center"
            android:src="@drawable/profile" />
    </LinearLayout>
</LinearLayout>

<LinearLayout
    android:id="@+id/GreenTagMasterLayout"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="5">
    <LinearLayout
        android:id="@+id/GreenTagLayout"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">
        <ImageView
            android:id="@+id/mainLogo"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_marginLeft="5dp"
            android:gravity="center"
            android:src="@drawable/profile" />
    </LinearLayout>
</LinearLayout>
<View
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight=".75"
    android:visibility="invisible" />

This is the starting portion of my layout. The view was supposed to take up only 1/20th height of my screen. But it is taking almost 80% of the screen. I cannot figure out what I have done wrong. Can someone please point out