Same pattern as At the concert — how many girls. New numbers, new story. Try each one on paper, then check the working below — or watch it drawn out, the same way the problem above is.
Question 1
At the void deck one evening there were 20% more grandmothers than grandfathers and 75% more grandsons than granddaughters. There were as many males as females. Altogether 660 people were at the void deck. How many granddaughters were there?
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Question 2
At the void deck one evening there were 30% more grandmothers than grandfathers and 40% more grandsons than granddaughters. There were as many males as females. Altogether 656 people were at the void deck. How many grandsons were there?
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Question 3
At the void deck one evening there were 75% more grandmothers than grandfathers and 40% more grandsons than granddaughters. There were as many males as females. Altogether 348 people were at the void deck. How many grandsons were there?
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Question 4
At the void deck one evening there were 20% more grandmothers than grandfathers and 40% more grandsons than granddaughters. There were as many males as females. Altogether 340 people were at the void deck. How many grandsons were there?
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Question 5
A swimming club has 40% more female coaches than male coaches and 10% more boy swimmers than girl swimmers. There are as many males as females in the club. The club has 324 people in all. How many girl swimmers are there?
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Question 6
A swimming club has 30% more female coaches than male coaches and 40% more boy swimmers than girl swimmers. There are as many males as females in the club. The club has 328 people in all. How many boy swimmers are there?
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Question 7
At the public swimming complex there were 40% more female lifeguards than male lifeguards and 20% more boy swimmers than girl swimmers. There were as many males as females at the pool. Altogether 136 people were at the pool. How many boy swimmers were there?
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Question 8
At the polyclinic one afternoon there were 60% more female patients than male patients and 10% more boy patients than girl patients. There were as many males as females at the polyclinic. Altogether 380 people were at the polyclinic. How many girl patients were there?
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Question 9
At the community library there were 40% more female librarians than male librarians and 75% more boy readers than girl readers. There were as many males as females in the library. Altogether 348 people were in the library. How many girl readers were there?
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Question 10
At a hawker centre there were 20% more aunties than uncles and 30% more boys than girls. There were as many males as females. Altogether 840 people were at the hawker centre. How many girls were there?
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Question 11
At a hawker centre there were 75% more aunties than uncles and 25% more boys than girls. There were as many males as females. Altogether 228 people were at the hawker centre. How many girls were there?
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Question 12
At the neighbourhood food fair there were 75% more female vendors than male vendors and 50% more boy visitors than girl visitors. There were as many males as females at the food fair. Altogether 130 people were at the food fair. How many girl visitors were there?
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Question 13
At a concert there were 20% more women than men and 30% more boys than girls. There were as many males as females. Altogether 840 people were there. How many girls were there?
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Question 14
At a concert there were 30% more women than men and 50% more boys than girls. There were as many males as females. Altogether 760 people were there. How many girls were there?
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Question 15
At a concert there were 40% more women than men and 10% more boys than girls. There were as many males as females. Altogether 432 people were there. How many girls were there?
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Question 16
At a concert there were 50% more women than men and 40% more boys than girls. There were as many males as females. Altogether 132 people were there. How many boys were there?
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Question 17
At the bus interchange after school there were 40% more female passengers than male passengers and 30% more schoolboys than schoolgirls. There were as many males as females at the interchange. Altogether 492 people were at the interchange. How many schoolgirls were there?
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Question 18
At the bus interchange after school there were 50% more female passengers than male passengers and 60% more schoolboys than schoolgirls. There were as many males as females at the interchange. Altogether 224 people were at the interchange. How many schoolboys were there?
Work it out on paper, then check below. ▶ See the working