1. find the HCF of 20,28 and 36, using prime factorization method .
2. a taxi driver feel his car petrol tank with 40 litres of petrol on Monday . the next day, he filled the tank with 50 litres of petrol . if the petrol costs 44 per litre , how much did the spend in all on petrol .
3. Ila read 25 pages of a book containing 100 pages. lalita read 2/5 of the same book. who read less?
4.v find the perimeter and area of rectangle whose sides are 15m and 8 m?
Answers
Step-by-step explanation:
1. 2(20 2(28 2(36
2(10 2(14 2(18
5(5 7(7 3(9
(1 (1 3(3
(1
20=2×2×5×1
28=2×2×7×1
36=2×2×3×3×1
Common Factor=2×2×1
H.C.F.=4
2. Cost of 1l petrol=₹44
,, ,, 40l petrol=₹44×40l
=₹1760
,, ,, 50l petrol= ₹55×50
= ₹2750
Total cost= ₹1760+₹2750
= ₹4510
Hope it will help...
Step-by-step explanation:
Answer=1
HCF of 20,28,36
HCF=4
Answer=2
Cost of one liter petrol =44
Monday =40L×44
=1,760 rupees
Next day =50L×44
=2,200 rupees
Total=1760+2200
=3,960 rupees
Answer =3
lla read pages =25/100
=1/4
lalita read pages =2/5
who read less pages
=1/4_2/5 (LCM=20)
=1×5/20_2×4/20
=5/20 < 8/20
=1/4 < 2/5
lla read less pages
Answer =4
length =15m
breadth =8m
perimeter =2(L+B)
=2(15+8)
=2×23
=46m
Area =L×B
=15×8
=120m²