EXERCISE -A
2) The cost of 2 dozen oranges is ₹48. What is the cost of 180 oranges?
3) A man can do pack of 275 boxes in 25 cartons. Find the number of boxes he can pack in 16 cartons.
4) A loaded bus travels 14 km 25 minutes. If the speed remains the same, how far can it travel in 5 hours ?
5) X and Y very directly and x= 8, when y= 2, find X, when Y= 10.
6) Suppose 2 kg of sugar contain 9 x 10⁶ crystals. How many sugar crystals are there in
A) 5 kg of sugar ?
B) 1.2 kg of sugar ?
7) the intrest on a certain sum (principal) at 6% per annum is ₹300. Find the interest on the same sum at 5% per annum for the same period.
8) If the weight of 5 mangoes is 800g, make a table showing the weight of:
A) one mango
B) 3 mangoes
C) 12 mangoes
D) 100 mangoes
Also find the number of mangoes win 6.4 kg
EXERCISE -A(1)
1) If 6 pens cost ₹45, then the cost of 10 such pen is
A) ₹75 B) ₹72 C) ₹78 D) ₹80
2) If the cost of 10 apples z is ₹90, then the cost of 15 Apple is
A) ₹145 B) ₹135 C) ₹125 D) ₹150
3) If a man covers a distance of 400 km in 1 hour, then the distance covered in 6 hours is
A) 220km B) 200 km C) 240km D) 280 km
4) If the cost of 5 dozen oranges is ₹150, the cost of 25 such or oranges is
A) 62.50 B) 60 C) ₹65.50 D) ₹70
EXERCISE -B
1) In a zoo, there was enough foof to 40 animals for 15 days. How long would the food last, if there were 20 more animals in the zoo ?
2) If 104 women can do a piece of work in 70 days, in how many days will 28 women do it ?
3) If 36 workers can do a piece of work in 20 days, in how many days will 15 workers complete the same work ?
4) 6 taps of equal capacity can fill a tub in 30 minutes. How many taps can fill it in 20 minutes ?
5) if 10 persons can dig a well in 20 days, in how many days will 4 persons dig another well of the same dimensions?
6) A 250 m long train is running at a speed of 55 km/h. In how much time will it cross a platform of the length of 520 m?
7) 45 cows can graze a field in 13 days. How many cows will graze the same field in 9 days ?
8) 3 women can do a work in two days. How long will six women take to complete the same work ?
9) In a zoo, there was enough food to feed 60 animals for 20 days. How long would the food last, if there were 40 more animals in the zoo?
10) A school hostel with 40 children has enough provisions to last 15 days. If 10 more children move into the hostel, how many days will the provision last now?
11) Soni has enough money to buy 15 note books worth ₹8 each. If each notebook was to cost ₹4 more, then how many notebooks would shebe able to buy with that amount of money?
12) If 125 people can do a piece of work in 75 days, in how many days will 25 people do it ?
EXERCISE -C
1) If 20 men can do a piece of work in 7 days, then the number of men required to complete the work in 28 days is
A) 4 B) 5 C) 6 D) 8
2) Mahesh type 540 words in half an hour. How many words would he type in 6 minutes ?
A) 105 B) 1081 C) 110 D) 115
3) if 20 persons can reap a field in 38 days, in how many days will 19 persons reap the same field ?
A) 40 days B) 21 days C) 19 days E) 25 days
4) 56 women can reap a field in 8 days. If the work is to be completed in 7 days, the extra women needed are
A) 7 B) 8 C) 9 C) 6
EXERCISE - D
1) If x varies as y, and x= 8 when y= 15, find x when y=10.
2) if a and b Vera inversely to each other and a =10, when b= 9, find b, when a= 15
A) 3 B) 4 C) 6 D) 8
3) If a and b vary inversely as each other and a=10, when b=9, find b, when a= 15.
A) 4 B) 8 C) 6 D) 10
4) If P varies inversely as Q and P= 7 when Q= 3, find P when Q=7/3.
5) A varies as B and C jointly; If A= 2 when B= 3/5 and C= 10/27 , find C when A=54 and B= 3.
6) If x varies as z, and y varies as z, then x± y and √(xy) will each varies as C
7) If the square of x varies as the cube of y, and x=3 when y= 4, find the value of y when x= 1/√3.
8) If A varies as Bc, then B varies inversely as C/A.
9) If P varies directly as Q and inversely as R; also P= 2/3 when Q= 3/7 and when R= 9/14, find Q when P= √48 and R= √75.
10) If x varies as y, show that x²+ y² varies as x²- y².
11) If y varies as the sum of two quantities, of which one varies directly as x and the other inversely as x, and if y= 6 when x= 4 and y=10/3 when x= 3; find the equation between x and y.
12) If y is equal to the sum of two quantities, one of which varies as x directly, and the other as x² inversely; and if y= 19 when x= 2, or 3; find y in terms of x.= 15, find x when y=10. =10.
Miscellaneous
1) 6 taps can fill a water tank in 4 hours. If only 2 taps are open, how long will it take to fill the tank ?
2) If 20 men can dig a well in 16 days, how many men will be required to dig the well in 10 days ?
3) Harsha buys 18 bananas spending ₹90, how many more bananas does Monu buy spending ₹135 ?
4) How much would 12 packets of biscuits cost, if it is given that 9 packets of biscuits cost ₹189 ?
5) A bike travels 90 km in 5 hours,
A) How much time does it take to travel 120 km at the same speed ?
B) How much distance does it cover in 2 hours 20 minutes when it travels at the same speed ?
6) if hundred oranges are packed into one carton, 20 such cartons are needed to pack all the oranges.
A) If 80 oranges are packed in one carton, how many such cartons will be needed ?
B) How many oranges can be packed packed in each carton, if 40 identical cartons are there ?
7) if 3 tailers can stitch 10 shirts in 4 days, then how much time will 6 tailors take to stitch 10 shirts?
8) 80 labours can build a building in 16 months. How month will 128 labourers take to build it under the same working conditions ?
No comments:
Post a Comment