Mrs. Vykuntam bought 6.25 m of dress material for her older daughter and 5.75 m for the younger one. How much dress material did she buy for her daughters.

Suppose you system of units has one years as the unit of tiem , one light year as the unit of length and mass of earth as the unit of mass. How much 1 N be equal to the units of force in this system. Take 1 year = 3 xx 10^(5) s , 1 light year = 9.5 xx 10^(15) m and mass and earth = 6 xx 10^(24) kg .

Two kidneys are present in human beings as excretory organs. Haritha, whose age is 23 years, donated one kidney to her father. Now she has one kidney only. She gave birth to a female child. How many kidneys are there in Haritha's daughter ?

Prathibha borrows ₹47000 from a finance company to buy her first car. The rate of simple interest is 17% and she borrows the money over a 5 year period. Find How much amount Prathibha should repay the finance company at the end of five years.

Sonu went to a shop. He wanted to buy a chiki and a toffee. One chiki costs ₹ 0.75 and a toffee costs ₹ 0.50. If he buys one each of them how much he has to pay to the shopkeeper. Sonu's mother gave him ₹ 2. He gave it to shopkeeper and bought items of ₹ 1.25. How much he will get in return ? Suppose if his mother gave her ₹ 5 then how much will the shopkeeper return ?

A n-type silicon sample of width 4xx10^(-3)m , thickness 25xx10^(-5)m and length 6xx10^(-2)m carries a current of 4.8 mA when the voltage is applied across the length of the sample. If the free electron density is 10^(22)m^(-3) , then find how much time does it take for the electrons to travel the full length of the sample? Given that charge on an electron e=1.6xx10^(-19)C