In a class the number of girls is 30 which is 40% of the total number of boys and girls in the class. Find the number of boys in the class.
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let total no of students be x.
no of girls=30=40% of x
30=40x/100
3000=40x
total students=75
no of boys=75-30=45
if it helps you... mark as brainliest
no of girls=30=40% of x
30=40x/100
3000=40x
total students=75
no of boys=75-30=45
if it helps you... mark as brainliest
chopraneetu:
thanx for marking
in a mixer of 72 litres of milk and water the ratio and water is 5:3. find the quantity of milk and water in mixture.
milk=(5×72)/8 litres
water = 3×72/8 litres
A man bought 15 kg of oil at rs 7 per kg. But 2kg of it dropped through a leak. At what price per kilogram should be sold the rest to make a total gain of rs 64?
cp = 15×7=105 rs. gain=64rs. SP=. 105+64=169. sp per litre= 169÷5=33.8rs
considering litre instead of KG
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